Gregory, A. (2015). Planning and managing public relations campaigns: A strategic approach (Fourth edition.). Philadelphia.
Chicago-Zitierstil (17. Ausg.)Gregory, Anne. Planning and Managing Public Relations Campaigns: A Strategic Approach. Fourth edition. London: Philadelphia, 2015.
MLA-Zitierstil (9. Ausg.)Gregory, Anne. Planning and Managing Public Relations Campaigns: A Strategic Approach. Fourth edition. Philadelphia, 2015.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.