Dyfyniad APA
BRYEN, D., & JOYCE, D. SIGN LANGUAGE AND THE SEVERELY HANDICAPPED.
Dyfyniad Arddull Chicago
BRYEN, D.N, and D.G JOYCE. SIGN LANGUAGE AND THE SEVERELY HANDICAPPED.
Dyfyniad MLA
BRYEN, D.N, and D.G JOYCE. SIGN LANGUAGE AND THE SEVERELY HANDICAPPED.
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