Cita APA (7a ed.)

Coombs, W. T., & Holladay, S. J. (2010). PR strategy and application: Managing influence. Wiley-Blackwell.

Cita Chicago Style (17a ed.)

Coombs, W. Timothy, y Sherry J. Holladay. PR Strategy and Application: Managing Influence. Chichester, U.K. ; Malden, MA: Wiley-Blackwell, 2010.

Cita MLA (9a ed.)

Coombs, W. Timothy, y Sherry J. Holladay. PR Strategy and Application: Managing Influence. Wiley-Blackwell, 2010.