Não informado. (1934). Speech Monographs. National Association of Teachers of Speech.
Chicago-referens (17:e uppl.)Não informado. Speech Monographs. Ann Arbor, Mich: National Association of Teachers of Speech, 1934.
MLA-referens (8:e uppl.)Não informado. Speech Monographs. National Association of Teachers of Speech, 1934.
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