APA (7th ed.) Citation

Canfield. (1968). Public relations: Principles, cases, and problems (5th ed.). R. D. Irwin.

Chicago Style (17th ed.) Citation

Canfield. Public Relations: Principles, Cases, and Problems. 5th ed. Homewood, Ill: R. D. Irwin, 1968.

MLA (8th ed.) Citation

Canfield. Public Relations: Principles, Cases, and Problems. 5th ed. R. D. Irwin, 1968.