Lua APA (7ú heag.)

Coyle, A. F. (1997). Leadership: The ASTD trainer's sourcebook. McGraw-Hill.

Lua i Stíl Chicago (17ú heag.)

Coyle, Anne F. Leadership: The ASTD Trainer's Sourcebook. New York: McGraw-Hill, 1997.

Lua MLA (9ú heag.)

Coyle, Anne F. Leadership: The ASTD Trainer's Sourcebook. McGraw-Hill, 1997.

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