APA
Gregory A., . (2000). Planning and managing a public relations campaigns. London: Kogan Page.
Chicago
Gregory Anne, . 2000. Planning and managing a public relations campaigns. London: Kogan Page.
Harvard
Gregory A., . (2000). Planning and managing a public relations campaigns. London: Kogan Page.
MLA
Gregory Anne, . Planning and managing a public relations campaigns. London: Kogan Page. 2000.