Gaya APA

Lim, J. (2008). Business Doctor: Step-by-Step Proven Techniques to Double Your in 90 Days . JAKARTA: PT. Gramedia Pustaka Utama.

Gaya MLA

Lim, Johanes. "Business Doctor: Step-by-Step Proven Techniques to Double Your in 90 Days". JAKARTA: PT. Gramedia Pustaka Utama, 2008. Nontext.