kson Gregory Anne & Ibbotson Trevor. (2002). Public Relations in Practice. Kogabn Page.
Cita Chicago (17th ed.)kson Gregory Anne i Ibbotson Trevor. Public Relations in Practice. New Delhi: Kogabn Page, 2002.
Cita MLA (9th ed.)kson Gregory Anne i Ibbotson Trevor. Public Relations in Practice. Kogabn Page, 2002.
Atenció: Aquestes cites poden no estar 100% correctes.