Gaya APA

Gwee, J. (2007). Positive business ideas : proven, practical, and easy-to apply ideas to improve your performance . Jakarta: Gramedia Pustaka Utama.

Gaya MLA

Gwee, James. "Positive business ideas : proven, practical, and easy-to apply ideas to improve your performance". Jakarta: Gramedia Pustaka Utama, 2007. Text.