Link includes more history on otherkin (specifically the therian community and unicorn community, as well as a history of plantkin online) - http://houseofchimeras.weebly.com/informative-articles.html
Academic Articles
Gerbasi, Kathleen C. et al, “Furries A to Z: (Anthropomorphism to Zoomorphism).” Society and Animals, Vol.16 (2008): pp 197-222. (accessed January 28, 2013).
Grivell, Timothy, Helen Clegg and Elizabeth C. Roxburgh. “An Interpretative Phenomenological Analysis of Identity in the Therian Community.” Identity: An International Journal of Theory and Research. Vol. 14, No. 2, (May 2014) http://www.tandfonline.com/doi/abs/10.1080/15283488.2014.891999?journalCode=hidn20#preview (accessed July 10 2014).
Keck et al, “Lycanthropy: Alive and Well In The Twentieth Century,” Psychological Medicine. Vol. 18, No. 1 (Feb., 1988): pp 113-20. http://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=4990600&fileId=S003329170000194X (accessed August 29 2014).
Kulick, Aaron, Pope HG Jr, & Keck PE Jr. “Lycanthropy and Self-Identification.” The Journal of Nervous and Mental Disease, Vol. 2 ( Feb. 1990): pp 134-137 http://www.ncbi.nlm.nih.gov/pubmed/2405100 (October 14 2014).
Laycock, Joseph P. “We Are Spirits of Another Sort: Ontological Rebellion and Religious Dimensions of the Otherkin Community.” Nova Religio. Vol. 15, No. 3 (Feb., 2012): pp. 65-90 http://www.jstor.org/stable/10.1525/nr.2012.15.3.65 (accessed November 24 2013).
Probyn-Rapsey, Fiona. “Furries and Limits of Species Identity Disorder,” Society & Animals, Vol. 19 (2011): pp 294-301 https://www.academia.edu/2903078/Furries_and_limits_of_species_identity_disorder (accessed January 28, 2013).
Robertson, Venetia Laura Delano. “The Beast Within: Anthrozoomorphic Identity and Alternative Spirituality in the Online Therianthropy Movement.” Nova Religio, Vol. 16, No. 3 (Feb 2013): pp. 7-30 http://www.jstor.org/stable/10.1525/nr.2013.16.3.7 (accessed November 24 2013).
Robertson, Venetia. “The Law of the Jungle: Self and Community in the Online Therianthropy Movement.”Pomegranate: The International Journal of Pagan Studies, Vol 14, No 2 (Dec., 2012): Pp 256-280 http://www.equinoxpub.com/journals/index.php/POM/article/view/17911 (accessed January 28, 2013).
Magazine Article
McNeil, Emma. “The Otherkin.” Fortean Times Magazine. January 2012, 44-46.
News Articles
Clairouin, Olivier. “Pas complètement humains : la vie en ligne des thérians et otherkin.” Le Monde.fr. May 20 2014. http://www.lemonde.fr/cultures-web/article/2014/05/20/pas-completement-humains-la-vie-en-ligne-des-therians-et-otherkins_4410306_4409029.html (accessed June 10 2014).
Lerner, Thomas. “Ibland får jag lust att yla som en varg,” Insidan, April 7 2010.
https://archive.today/ZX0Ti (accessed January 20 2013).
Mamatas, Nick. “Elven Like Me,” The Village Voice News, February 13 2001. http://www.villagevoice.com/2001-02-13/news/elven-like-me/full/ (accessed February 1 2015).
Academic Lecture
Addie, Trevor. “Therianthropy: A State of Being,” ANTH-331 “Taboos,” American University, March 5th 2013, https://www.youtube.com/watch?v=ZMEkuOW5pjs (accessed August 20 2014).
News Clip
McDougall, Nick. “Otherkin: Heart of a Human, Spirit of a Wolf,” SBS World News, SBS, June 4th 2013, http://www.sbs.com.au/news/video/32187459989/Otherkin-Heart-of-a-human-spirit-of-a-wolf (accessed June 6th 2013).
McDougall, Nick. “Otherkin: Heart of a Human, Spirit of a Wolf,” 4:21, Posted on “SBS2Austrailia.” June 4th 2013, https://www.youtube.com/watch?v=eU_E-oXxyQU (accessed June 5th 2013).
Documentary
Pemberton, Justin. Animal Imitators. TLC. August 2003.
A few non-academic Books (referring otherkin and/or therians)
Cohen, Daniel. Werewolves. Cobblehill Books: New York, 1996.
Konstantinos. Werewolves: The Occult Truth. Woodbury, MN: Llewellyn, 2010.
Lupa. A Field Guide To Otherkin. Megalithica Books: Stafford, 2007.
Lupa. Shifting, Shamanism and Therianthropy: Magical Techniques For Your Therioside. Self-published via Lulu.com, 2007.
Yeah… its such a tumblr thing and has only existed for a few years…