Zollo, B. (1967). The dollars and sence of public relations. McGraw-Hill.
Cita Chicago (17th ed.)Zollo, Burt. The Dollars and Sence of Public Relations. Nueva York: McGraw-Hill, 1967.
Cita MLA (9th ed.)Zollo, Burt. The Dollars and Sence of Public Relations. McGraw-Hill, 1967.
Atenció: Aquestes cites poden no estar 100% correctes.