Gaya APA

Heyward, A. (2013). Secret millionaires club : Warren Buffett's 26 secrets to success in the business of life . New Jersey: John Wiley & Sons.

Gaya MLA

Heyward, Andy. "Secret millionaires club : Warren Buffett's 26 secrets to success in the business of life". New Jersey: John Wiley & Sons, 2013. E-Book.