Berko, R. M., Wolvin, A. D., & Wolvin, D. R. (1981). Communicating: A social and career focus (2nd ed.). Houghton Mifflin.
Chicago Style aipamenaBerko, Roy M., Andrew D. Wolvin, and Darlyn R. Wolvin. Communicating: A Social and Career Focus. 2nd ed. Boston: Houghton Mifflin, 1981.
MLA aipamenaBerko, Roy M., et al. Communicating: A Social and Career Focus. 2nd ed. Houghton Mifflin, 1981.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.