Gaya APA

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

Gaya MLA

Lim, Johanes. "Business Doctor Step-by-step Proven Techniques to Double Your Profit in 90 days". Jakarta: PT. Gramedia Pustaka Utama, 2008. Buku.