Marston, J. E. (1963). The nature of public relations. McGraw-Hill.
Cita Chicago (17th ed.)Marston, John E. The Nature of Public Relations. New York: McGraw-Hill, 1963.
Cita MLA (9th ed.)Marston, John E. The Nature of Public Relations. McGraw-Hill, 1963.
Atenció: Aquestes cites poden no estar 100% correctes.