Cita APA (7th ed.)
Wentk, R. (2010). Cocoa. Wiley.
Cita Chicago (17th ed.)
Wentk, Richard. Cocoa. Indianapolis, Ind.: Wiley, 2010.
Cita MLA (9th ed.)
Wentk, Richard. Cocoa. Wiley, 2010.
Atenció: Aquestes cites poden no estar 100% correctes.