Sebeok, Thomas A. & Jean Umiker-Sebeok, eds, Speaking of apes: a critical anthology of two-way communication with man. New York: Plenum, 141–43. Kamei, Nobutaka (2004). The Sign Languages of Africa, "Journal of African Studies" (Japan Association for African Studies) Vol. 64, March, 2004. [NOTE: Kamei lists 23 African sign languages in this article]. Kegl, Judy, Senghas A., Coppola M (1999). "Creation through contact: Sign language emergence and sign language change in Nicaragua." In: M. DeGraff (ed.), Comparative Grammatical Change: The Intersection of Language Acquisition, Creole Genesis, and Diachronic Syntax, pp. 179–237. Cambridge, Massachusetts: MIT Press. Kegl, Judy (2004). "Language Emergence in a Language-Ready Brain: Acquisition Issues." In: Jenkins, Lyle (ed.), Biolinguistics and the Evolution of Language. John Benjamins. Kendon, Adam. (1988). Sign Languages of Aboriginal Australia: Cultural, Semiotic and Communicative Perspectives. Cambridge: Cambridge University Press. Lane, Harlan L. (Ed.). (1984). The Deaf experience: Classics in language and education. Cambridge, Massachusetts: Harvard University Press. . Lane, Harlan L. (1984). When the mind hears: A history of the deaf. New York: Random House. . Madell, Samantha (1998). Warlpiri Sign Language and Auslan – A Comparison. M.A. Thesis, Macquarie University, Sydney, Australia. Madsen, Willard J. (1982), Intermediate Conversational Sign Language. Gallaudet University Press. . O'Reilly, S. (2005). Indigenous Sign Language and Culture; the interpreting and access needs of Deaf people who are of Aboriginal and/or Torres Strait Islander in Far North Queensland. Sponsored by ASLIA, the Australian Sign Language Interpreters Association. Padden, Carol; & Humphries, Tom. (1988). Deaf in America: Voices from a culture. Cambridge, Massachusetts: Harvard University Press. . Pfau, Roland, Markus Steinbach & Bencie Woll (eds.), Sign language. An international handbook (HSK – Handbooks of linguistics and communication science). Berlin: Mouton de Gruyter. Poizner, Howard; Klima, Edward S.; & Bellugi, Ursula. (1987). What the hands reveal about the brain. Cambridge, Massachusetts: MIT Press. Premack, David, & Ann J. Premack (1983). The mind of an ape. New York: Norton. Sacks, Oliver W. (1989). Seeing voices: A journey into the world of the deaf. Berkeley: University of California Press. . Sandler, Wendy (2003). "Sign Language Phonology". In William Frawley (Ed.), The Oxford International Encyclopedia of Linguistics. Sandler, Wendy & Lillo-Martin, Diane (2001). "Natural sign languages". In M. Aronoff & J. Rees-Miller (Eds.), Handbook of linguistics (pp. 533–562). Malden, MA: Blackwell Publishers. . Stiles-Davis, Joan; Kritchevsky, Mark; & Bellugi, Ursula (Eds.). (1988). Spatial cognition: Brain bases and development. Hillsdale, NJ: L. Erlbaum Associates. ;