Gaya APA

Wattles, W, D. (2007). The Science of Getting Rich ; The Proven Mental Praogram To A Life Of Wealth . New York: Jeremy P. Tarcher.

Gaya MLA

Wattles, Wallace, D.. "The Science of Getting Rich ; The Proven Mental Praogram To A Life Of Wealth". New York: Jeremy P. Tarcher, 2007. FE-Manajemen.