Tepper, A., & Roman, P. A. (1968). The oral communication; his role and function. Burgess Pub.
Lua i Stíl Chicago (17ú heag.)Tepper, Albert, agus Paul A. Roman. The Oral Communication; His Role and Function. Minneapolis, Minnesota: Burgess Pub, 1968.
Lua MLA (9ú heag.)Tepper, Albert, agus Paul A. Roman. The Oral Communication; His Role and Function. Burgess Pub, 1968.
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