Butterick, K. (2011). Introducing Public Relations Theory and Practice. Sage Publications.
Cita Chicago (17th ed.)Butterick, Keith. Introducing Public Relations Theory and Practice. India: Sage Publications, 2011.
Cita MLA (9th ed.)Butterick, Keith. Introducing Public Relations Theory and Practice. Sage Publications, 2011.
Atenció: Aquestes cites poden no estar 100% correctes.