Schlosser, R. W. (2003). The efficacy of augmentative and alternative communication. Academic Press.
Lua i Stíl Chicago (17ú heag.)Schlosser, Ralf W. The Efficacy of Augmentative and Alternative Communication. Amsterdam ; Boston: Academic Press, 2003.
Lua MLA (9ú heag.)Schlosser, Ralf W. The Efficacy of Augmentative and Alternative Communication. Academic Press, 2003.
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