Lua APA (7ú heag.)

Canfield, B. R. (1960). Public relations: Principles, cases, and problems (3rd ed.). Irwin.

Lua i Stíl Chicago (17ú heag.)

Canfield, Bertrand R. Public Relations: Principles, Cases, and Problems. 3rd ed. Homewood, Ill: Irwin, 1960.

Lua MLA (9ú heag.)

Canfield, Bertrand R. Public Relations: Principles, Cases, and Problems. 3rd ed. Irwin, 1960.

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