Gregory, A. (2015). Planning and managing public relations campaigns: A strategic approach (Fourth edition.). Philadelphia.
Chicago-referens (17:e uppl.)Gregory, Anne. Planning and Managing Public Relations Campaigns: A Strategic Approach. Fourth edition. London: Philadelphia, 2015.
MLA-referens (9:e uppl.)Gregory, Anne. Planning and Managing Public Relations Campaigns: A Strategic Approach. Fourth edition. Philadelphia, 2015.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.