Gaya APA

Deardorff, M, D. (2007). Positive business ideas : proven, practical and easy-to-apply ideas to improve your performance (Cet. 5). Bandung: Gramedia Pustaka Utama.

Gaya MLA

Deardorff, Michelle, D.. "Positive business ideas : proven, practical and easy-to-apply ideas to improve your performance". Cet. 5 Bandung: Gramedia Pustaka Utama, 2007. Text.