Osisanwo, A. & Oyeyemi, T. 2023. Code alternation in selected Nigerian hip-hop music. Linguistic structure, language contact and virtual communication: A festschrift for Tayo Lamidi. IOA Nwabueze & R. Aboh (Eds.) Abuja: NOUN. pp 175-189. ISBN: 978-978-058-208-1.
Osisanwo, A. 2024. The Segmentals of English. Dele Adeyanju & Olutoyin Jegede (Eds.) Introduction to communication in English. A Publication of Chrisland University. 119-135
Osisanwo, A. 2024. The Suprasegmentals of English. Dele Adeyanju & Olutoyin Jegede (Eds.) Introduction to communication in English. A Publication of Chrisland University. 136-152
Osisanwo, A. A. & Odeyemi, F. 2022. The intonation of selected educated Hausa speakers of English in Bayero University, Kano. Linguistic discourses and literary appraisals: A festschrift for Raphael O. Atoye. Demola Jolayemi, Adenike Akinjobi, George Adekunle Ojo & Oladunjoye Faleye (Eds). Ilorin: Haytee Press & Publishing. pp 122-151. ISBN:978-978-983-928-5. Contribution: 50% (Nigeria).
Osisanwo, A. A. 2020. The exemplary applied linguist: an exploration into Alo’s linguistic scholarship. Applied linguistics, linguistic variations and English usage in the Nigerian context: A festschrift for Moses Alo. Osisanwo, A. A., Bamigbade, W., Egbunike, Tella, A. (Eds.) (Nigeria). 3-14pp. ISBN: 978-978-940-824-5.
Osisanwo, A. A. & Ajibade, T. 2020. Context and gender issues in selected sermons of Nigerian female preachers. Applied Linguistics, Linguistic Variations and English Usage in the Nigerian Context: A Festschrift for Moses Alo. Osisanwo, A. A., Bamigbade, W., Egbunike, Tella, A. (Eds.). Ibadan: University Press Limited. (Nigeria). 435-455pp.ISBN: 978-978-940-824-5.
Osisanwo, A. A. 2020. The quintessential Nigerian English phonologist: An exploration into Akinjobi’s phonological trajectory. In RotimiOladipupo, JulianahAkindele, Ayo Osisanwo (Eds.) Phonetics, phonology and sociolinguistics in the Nigerian context: a festschrift for AdenikeAkinjobi. Ibadan: Stirling-Horden(Nigeria).3-23pp. ISBN: 978-978-032-806-8.
Osisanwo, A. A. & Akintaro, S. 2020. Intonation Patterns as Contextualisation Cues and Discursive Strategies in Selected Ibadan Courtroom Discourse. In Rotimi Oladipupo, Julianah Akindele, Ayo Osisanwo. Phonetics, phonology and sociolinguistics in the Nigerian context: a festschrift for Adenike Akinjobi. Ibadan: Stirling-Horden(Nigeria). 109-131pp. ISBN: 978-978-032-806-8. Contribution: 50%.
Osisanwo, A. A. & Ajibade, T. 2020. Discourse issues and strategies in Vice Chancellor Abel Idowu Olayinka’s convocation speeches. In Ayobami Kehinde, Oyesoji Aremu and Matthew Nton. Homage to a gentleman scholar-administrator: A festschrift in honour of Professor Abel Idowu Olayinka. Ibadan: Ibadan University Press. 11-33pp. ISBN: 978-978-8550-39-6. Contribution: 50%.
Osisanwo, W. & Osisanwo, A. A. 2020. The Hallidayan systemic functional grammar. Interrogating gender through third world dialectics: a multi-disciplinary approach: a festschrift in honour of Yetunde O. O. Akorede. In Y. Ogunsiji, C. Adebiyi, A. O. Olajuyigbe, G. Dare, R. Adebile and O. M. Olaleye. Eds. pp 393-418. ISBN: 978-978-573-293-1. Contribution: 50%.
Kehinde, M. A., Lamidi, M. T., Akinjobi, A. A., Osisanwo, A. A., Adebiyi-Adelabu, A. K. 2019. Theories and methodologies in English studies. In A. B. Ekanola, A. Raji-Oyelade and R. O. Olaniyi. Theories and methodologies in the humanities. TETFUND/Ibadan: Ibadan University Press. Pp 95-129. ISBN 978-978-8529-76-7.
Osisanwo, A. A. 2019. Speaking Skills as an enhancer of communication in the classroom. In Ruth K. B. Oji Communication in education: a handbook for teachers. Ibeju-Lekki: Pan-Atlantic University Press. Pp. 50-67. ISBN: 978-978-976-591-1.
Osisanwo, A. A. & Alugbin, M. 2019. Rhetoric of defeat in American presidential concession speeches (APCSs). In Oluwaseun Rachael Bello & Henry Jedidiah Hunjo (Eds), Sociolinguistics, (critical) discourse, pragmatics & Nigerian English: A Festschrift in honour of Dele Samuel Adeyanju. Lagos: Digitech Creative Press House. 523- 537pp. ISBN: 978-978-972-452-9. Contribution: 50% (Nigeria).
Osisanwo, A. A. 2019. Speaking skills: The sound system of English. In KazeemAdebiyi-Adelabu & Ayo Osisanwo. Effective communication and literary appreciation skills: A textbook for GES 101 Use of English II. Ibadan: Ibadan University Press. Pp 255-274. ISBN 978-978-8529-83-5.
Osisanwo, A. A. 2019. Vocabulary development, meaning relations and spelling in English. In Ayo Osisanwo & KazeemAdebiyi-Adelabu. Effective English usage: A textbook for GES 101 Use of English I. Ibadan: Ibadan University Press. Pp 255-274. ISBN 978-978-043-722-1.
Osisanwo, A. A. & Atoloye, L. 2018. The generic structure potential in The Punch editorials on Boko Haram. In F. Unuabonah, K. A. Ayoola& A. Adegoju (Eds.). Explorations in critical discourse and new media studies: essays in honour of Rotimi Taiwo. Glienicke: GaldaVerlag. 315 – 336 pp. ISBN 978-3-96203-023-0. Contribution: 50% (Germany).
Osisanwo, A. A. & Chinaguh, E. 2018. Rhetorical relations in presidential concession speeches of Goodluck Jonathan of Nigeria and John Mahama of Ghana. In Ayo Osisanwo, Ibrahim Olaosun&IdowuOdebode (Eds.) Discourse-stylistics, sociolinguistics and society: a festschrift for Ayo Ogunsiji. Ibadan: Stirling-Horden. 195-226pp. ISBN: 978-978-032-701-9. Contribution: 50% (Nigeria).
I. Kamalu & Osisanwo, A. A. (2015). Discourse analysis. In Ikenna Kamalu and Isaac Tamunobelema. (Eds.) Issues in the Study of Language and Literature. Ibadan: Kraft Books Limited. 169-195 pp. ISBN 978-918-321-0. (Nigeria)
Osisanwo, A. A. (2010). Language, Style and Meaning in Political Slogans. In Sola Babatunde, Akin Odebunmi, Akin Adetunji, Mahfouz Adedimeji (Eds.) Studies in Slang and Slogans. Germany: LINCOM EUROPA publishers. 275-288 pp. ISBN 978 3 929075 717. (Germany)
Osisanwo, A. A. (2009). Slangy Expressions as Communicative Tools among University Undergraduates. In Dele Adeyanju (Ed.) Sociolinguistics in the Nigerian Context.Germany: LINCOM EUROPA publishers. 206-222 pp. ISBN 978 3 89586 579 4. (Germany)