Lua APA (7ú heag.)

WHITNEY, J. O. (1994). The Trust Factor. McGraw-Hill.

Lua i Stíl Chicago (17ú heag.)

WHITNEY, John O. The Trust Factor. McGraw-Hill, 1994.

Lua MLA (8ú heag.)

WHITNEY, John O. The Trust Factor. McGraw-Hill, 1994.

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