Ward, J. Ward-s natural sign language thesaurus of useful sings and synonyms. Joyce Media.
Style de citation Chicago (17e éd.)Ward, Jill. Ward-s Natural Sign Language Thesaurus of Useful Sings and Synonyms. Joyce Media.
Style de citation MLA (8e éd.)Ward, Jill. Ward-s Natural Sign Language Thesaurus of Useful Sings and Synonyms. Joyce Media.
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