Cita APA (7th ed.)
Heath, R. L., & Vasquez, G. (2001). Handbook of public relations. Sage Publications.
Cita Chicago (17th ed.)
Heath, Robert L., i Gabriel Vasquez. Handbook of Public Relations. Thousand Oaks, Calif.: Sage Publications, 2001.
Cita MLA (9th ed.)
Heath, Robert L., i Gabriel Vasquez. Handbook of Public Relations. Sage Publications, 2001.
Atenció: Aquestes cites poden no estar 100% correctes.