Foster, Michael Dylan. The Book of Yokai: Mysterious Creatures of Japanese Folklore. University of California Press, 2015.
Johnson, Adam. ”The Evolution of Yōkai in Relationship to the Japanese Horror Genre.” University of Massachusetts Amherst Thesis. 2015.
“Yokai – Rokurokubi.” NIJI Zine, www.clubotaku.org/niji/cultu/yokai-rokurokubi/.
“Glimpses of Unfamiliar Japan.” Google Books, books.google.com/books?id=wz7wdeMs6PYC&printsec=frontcover&dq=editions%3ANuWV_Jy80s0C&hl=en&sa=X&ved=0ahUKEwic4Ljn66PRAhVP5mMKHS15DMsQ6AEIHDAA#v=onepage&q=nukekubi&f=false.
“Lafcadio Hearn.” Google Books, books.google.com/books?hl=en&lr=&id=xKWrA-03dYsC&oi=fnd&pg=PA1&dq=nukekubi&ots=iwrlOUr-dy&sig=6GC2B89E3P5xASStqPouwAnn7Ic#v=onepage&q=nukekubi&f=false.
“Traditional Monster Imagery in Manga, Anime and Japanese Cinema.” Google Books, books.google.com/books?hl=en&lr=&id=_fR5DwAAQBAJ&oi=fnd&pg=PR7&dq=Rokurokubi&ots=tqtDYbRlHe&sig=bqXQGIJ8dihCnMnz7nP_Su_lcEI#v=onepage&q=rokurokubi&f=false.
https://www.jstor.org/stable/pdf/4629355.pdf?refreqid=excelsior%3Aaafb848e8ff86c43f4515cc0c479703e
https://ebookcentral.proquest.com/lib/pitt-ebooks/reader.action?docID=1710992&query=