Citazione APA

Buffett, M., & Clark, D. (2009). The Warren Buffett management secrets: Proven tools for personal and business sucess. Simon & Schuster.

Stile di citazione Chicago

Buffett, Mary, e David Clark. The Warren Buffett Management Secrets: Proven Tools for Personal and Business Sucess. London: Simon & Schuster, 2009.

Citazione MLA

Buffett, Mary, e David Clark. The Warren Buffett Management Secrets: Proven Tools for Personal and Business Sucess. Simon & Schuster, 2009.