Παραπομπή APA

Zappala,, J. M., & Carden,, A. R. (2010). Public Relations Writing Worktext: A Practical Guide for the Profession (3.). Routledge.

Παραπομπή Chicago Style

Zappala,, Joseph M., και Ann R. Carden. Public Relations Writing Worktext: A Practical Guide for the Profession. 3. London: Routledge, 2010.

Παραπομπή MLA

Zappala,, Joseph M., και Ann R. Carden. Public Relations Writing Worktext: A Practical Guide for the Profession. 3. Routledge, 2010.