Center, A. H. (1957). Public relations ideas in action: 500 tested public relations programs and techniques. McGraw-Hill.
Cita Chicago Style (17a ed.)Center, Allen H. Public Relations Ideas in Action: 500 Tested Public Relations Programs and Techniques. New York [etc.]: McGraw-Hill, 1957.
Cita MLA (9a ed.)Center, Allen H. Public Relations Ideas in Action: 500 Tested Public Relations Programs and Techniques. McGraw-Hill, 1957.
Precaución: Estas citas no son 100% exactas.