Wolf, M. P., Aurner, R. R., & Keyser, D. F. (1979). Effective communication in business (7th ed.). South-Western Pub.
Chicago-viite (17. p.)Wolf, Morris Philip, Robert Ray Aurner, ja Dale F. Keyser. Effective Communication in Business. 7th ed. Cincinnati: South-Western Pub, 1979.
MLA-viite (9. p.)Wolf, Morris Philip, et al. Effective Communication in Business. 7th ed. South-Western Pub, 1979.
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