BAKER, C. American Sign Language : a teacher's resource text on grammar and culture. 1980
BELLUGI, U. The acquisition of a spatial language. The development of language and language researchers. 1988, 153-185
BOYES BRAEM, P. Acquisition of the hand-shape in American Sign Language : Preliminary analysis. From gesture to language in hearing and deaf children. 1990, 107-127
CURTISS, S. Genie : A psycholinguistic study of a modern-day "Wild Child". 1977