Altschuld, J. W., & Thomas, P. M. (1991). Considerations in the application of a modified scree test for Delphi survey data. Evaluation Review, 15 (2), 179-188.
Cuncic, A. (2022). Internal Validity vs. External Validity in Research. Verywell Mind. https://www.verywellmind.com/internal-and-external-validity-4584479
Donohoe, H. M., & Needham, R. D. (2009). Moving best practice forward: Delphi characteristics, advantages, potential problems, and solutions. International Journal of Tourism Research, 11(5), 415-437.
Dufresne, K. (2018). The Delphi technique. Students 4 Best Evidence. https://s4be.cochrane.org/blog/2017/11/15/the-delphi-technique/
Fink-Hafner, D., Dagen, T., Doušak, M., Novak, M., & Hafner-Fink, M. (2019). Delphi method: strengths and weaknesses.Advances in Methodology and Statistics, 16(2), 1-19.
GreggU (2019). Delphi Technique [video].
Hasson F, Keeney S, McKenna H. Research guidelines for the Delphi survey technique. J Adv Nurs. 2000 Oct;32(4):1008-15. PMID: 11095242.
Hsu, Chia-Chien & Sandford, Brian A. (2019) The Delphi Technique: Making Sense of Consensus, Practical Assessment, Research, and Evaluation: Vol. 12, Article 10. DOI: https://doi.org/10.7275/pdz9-th90
Hsu, C. C., & Sandford, B. A. (2019). The Delphi technique: making sense of consensus. Practical assessment, research, and evaluation, 12(1), 10. https://doi.org/10.7275/pdz9-th90
Hyndman, R.J., & Athanasopoulos, G. (2018) Forecasting: principles and practice, 2nd edition, OTexts: Melbourne, Australia. OTexts.com/fpp2.
Krosel, A., Eads, A., Sherman, C., Birt, J., Murray, J.K., Herrity, J., Gafner, J., Garcia, R. (2023). Delphi Medthod: Definition, Stages, Pros, Cons, Examples. Indeed Career Guide. https://www.indeed.com/career-advice/career-development/delphi-method
Niederberger, M., & Spranger, J. (2020). Delphi Technique in Health Sciences: A Map. Frontiers in Public Health, 8, 561103. https://doi.org/10.3389/fpubh.2020.00457
Patino, C. M., & Ferreira, J. C. (2018). Internal and external validity: can you apply research study results to your patients?. Jornal brasileiro de pneumologia : publicacao oficial da Sociedade Brasileira de Pneumologia e Tisilogia, 44(3), 183. https://doi.org/10.1590/S1806-37562018000000164
Rivière, M. (2018). What is the Delphi method and what is it used for? [Online image] Mesydel. https://blog.mesydel.com
Skulmoski, G. J., Hartman, F. T., & Krahn, J. (2007). The Delphi method for graduate research. Journal of Information Technology Education: Research, 6(1), 1-21.
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