Gaya APA

Hokter, E, A. (2011). Practicing Leadership Principles and Aplications (Fourth Edition). River Street Hoboken: John Wiley & Sons LTD.

Gaya MLA

Hokter, Erwin, A.. "Practicing Leadership Principles and Aplications". Fourth Edition River Street Hoboken: John Wiley & Sons LTD, 2011. Text.