Adler, R. B. (1977). Confidence in communication: A guide to assertive and social skills. Holt rinehart and winston.
Lua i Stíl Chicago (17ú heag.)Adler, Ronald B. Confidence in Communication: A Guide to Assertive and Social Skills. New York: Holt rinehart and winston, 1977.
Lua MLA (9ú heag.)Adler, Ronald B. Confidence in Communication: A Guide to Assertive and Social Skills. Holt rinehart and winston, 1977.
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