Center, A. H. e. (1957). Public relations ideas in action; 500 tested public relations programs and techniques. McGraw-Hill.
Cita Chicago Style (17a ed.)Center, Allen H. ed. Public Relations Ideas in Action; 500 Tested Public Relations Programs and Techniques. New York: McGraw-Hill, 1957.
Cita MLA (9a ed.)Center, Allen H. ed. Public Relations Ideas in Action; 500 Tested Public Relations Programs and Techniques. McGraw-Hill, 1957.
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