APA

Center A. H., . (1957). Public relations ideas in action: 500 tested public relations programs and techniques. New York: McGraw-Hill.

Chicago

Center Allen H, . 1957. Public relations ideas in action: 500 tested public relations programs and techniques. New York: McGraw-Hill.

Harvard

Center A. H., . (1957). Public relations ideas in action: 500 tested public relations programs and techniques. New York: McGraw-Hill.

MLA

Center Allen H, . Public relations ideas in action: 500 tested public relations programs and techniques. New York: McGraw-Hill. 1957.