Gaya APA

CPC, J, L, P. (2008). Business doctor : step-by-step proven techniques to double your profit in 90 days . Jakarta: PT.Gramedia pustaka utama.

Gaya MLA

CPC, Johanes, Lim,, Ph.D.,. "Business doctor : step-by-step proven techniques to double your profit in 90 days". Jakarta: PT.Gramedia pustaka utama, 2008. Text.