Dartnell Corporation, Chicago, & Aspley, J. C. (1961). The Dartnell public relations handbook (3rd ed.). Dartnell Corp..

Dartnell Corporation, Chicago, and John Cameron Aspley. The Dartnell Public Relations Handbook. 3rd ed. Chic.: Dartnell Corp., 1961.

Dartnell Corporation, Chicago, and John Cameron Aspley. The Dartnell Public Relations Handbook. 3rd ed. Dartnell Corp., 1961.