APA (7th ed.) Citation

Canfield, B. R. (1952). Public relations; principles and problems. R. D. Irwin.

Chicago Style (17th ed.) Citation

Canfield, Bertrand R. Public Relations; Principles and Problems. Homewood, Ill: R. D. Irwin, 1952.

MLA (9th ed.) Citation

Canfield, Bertrand R. Public Relations; Principles and Problems. R. D. Irwin, 1952.