Gaya APA

Cutlip, S, M. (1985). Effective public relations (6 th. ed.). Englewood Cliffs, NJ: Prentice-Hall International, Inc..

Gaya MLA

Cutlip, Scott, M.. "Effective public relations". 6 th. ed. Englewood Cliffs, NJ: Prentice-Hall International, Inc., 1985. Text.