APA (7th ed.) Citation

Hill and Knowlton, Inc. (1975). Critical issues in public relations. Prentice-Hall.

Chicago Style (17th ed.) Citation

Hill and Knowlton, Inc. Critical Issues in Public Relations. Englewood Cliffs, N.J.: Prentice-Hall, 1975.

MLA (9th ed.) Citation

Hill and Knowlton, Inc. Critical Issues in Public Relations. Prentice-Hall, 1975.