Lua APA (7ú heag.)

JEFKINS FRANK. (1989). PUBLIC RELATIONS TECHNIQUES. HEINEMANN.

Lua i Stíl Chicago (17ú heag.)

JEFKINS FRANK. PUBLIC RELATIONS TECHNIQUES. OXFORD: HEINEMANN, 1989.

Lua MLA (9ú heag.)

JEFKINS FRANK. PUBLIC RELATIONS TECHNIQUES. HEINEMANN, 1989.

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