Citazione APA

Cutlip, S. M., & Center, A. H. (1971). Effective public relations/4e (4th ed.). Prentice Hall, Inc.

Stile di citazione Chicago

Cutlip, Scott M., e Allen H. Center. Effective Public Relations/4e. 4th ed. New Jersey: Prentice Hall, Inc, 1971.

Citazione MLA

Cutlip, Scott M., e Allen H. Center. Effective Public Relations/4e. 4th ed. Prentice Hall, Inc, 1971.