Lua APA (7ú heag.)

Foster, J. (2008). Effective writing skills for public relations (4th ed.). Kogan Page.

Lua i Stíl Chicago (17ú heag.)

Foster, John. Effective Writing Skills for Public Relations. 4th ed. London ; Philadelphia: Kogan Page, 2008.

Lua MLA (9ú heag.)

Foster, John. Effective Writing Skills for Public Relations. 4th ed. Kogan Page, 2008.

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