Oliver Sandra. (2010). Public Relations Strategy (3rd ed.). Kogon Page.
Cita Chicago (17th ed.)Oliver Sandra. Public Relations Strategy. 3rd ed. London: Kogon Page, 2010.
Cita MLA (9th ed.)Oliver Sandra. Public Relations Strategy. 3rd ed. Kogon Page, 2010.
Atenció: Aquestes cites poden no estar 100% correctes.