Hawkins, B. L., & Preston, P. (1981). Managerial communication. Goodyear Pub.
Chicago Style aipamenaHawkins, Brian L., and Paul Preston. Managerial Communication. Santa Monica, Calif: Goodyear Pub, 1981.
MLA aipamenaHawkins, Brian L., and Paul Preston. Managerial Communication. Goodyear Pub, 1981.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.