Gaya APA

o'toole, J. et al (2003 ). Leadership A to Z : a guide for the appropriately ambitious : panduan berambisi secara positif . : Erlangga.

Gaya MLA

o'toole, James. et al. "Leadership A to Z : a guide for the appropriately ambitious : panduan berambisi secara positif". : Erlangga, 2003 . Text.