APA (7th ed.) Citation

Sills, T. R., & Lesly, P. (1945). Public relations, principles and procedures. R. D. Irwin, inc.

Chicago Style (17th ed.) Citation

Sills, Theodore R., and Philip Lesly. Public Relations, Principles and Procedures. Chicago: R. D. Irwin, inc, 1945.

MLA (9th ed.) Citation

Sills, Theodore R., and Philip Lesly. Public Relations, Principles and Procedures. R. D. Irwin, inc, 1945.