Newell, W., & Paul, F. A. (1983). Basic sign communication. National Association of the deaf.
Lua i Stíl Chicago (17ú heag.)Newell, William, agus Frank Allen Paul. Basic Sign Communication. Maryland: National Association of the deaf, 1983.
Lua MLA (9ú heag.)Newell, William, agus Frank Allen Paul. Basic Sign Communication. National Association of the deaf, 1983.
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