Παραπομπή APA

Murphy, H. A. (1980). Effective business communication. Mc Graw - Hill.

Παραπομπή Chicago Style

Murphy, Herta A. Effective Business Communication. U S A: Mc Graw - Hill, 1980.

Παραπομπή MLA

Murphy, Herta A. Effective Business Communication. Mc Graw - Hill, 1980.