Adler, R. B. (1977). Confidence in communication: A guide to assertive and social skills. Holt rinehart and winston.

Adler, Ronald B. Confidence in Communication: A Guide to Assertive and Social Skills. New York: Holt rinehart and winston, 1977.

Adler, Ronald B. Confidence in Communication: A Guide to Assertive and Social Skills. Holt rinehart and winston, 1977.