Lua APA (7ú heag.)

Penn, B. (2004). Be your own PR expert (2nd ed.). Thomson Learning.

Lua i Stíl Chicago (17ú heag.)

Penn, Bill. Be Your Own PR Expert. 2nd ed. Australia: Thomson Learning, 2004.

Lua MLA (9ú heag.)

Penn, Bill. Be Your Own PR Expert. 2nd ed. Thomson Learning, 2004.

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