Hedde, W. G., Brigance, W. N., & Powell, V. M. (1973). Pattern in communication: A guide to speech and critical listening. Lippincott.
Chicago-viite (17. p.)Hedde, Wilhelmina Genevava, William Norwood Brigance, ja Victor Morgan Powell. Pattern in Communication: A Guide to Speech and Critical Listening. Philadelphia: Lippincott, 1973.
MLA-viite (9. p.)Hedde, Wilhelmina Genevava, et al. Pattern in Communication: A Guide to Speech and Critical Listening. Lippincott, 1973.
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