Cita APA

Vaynerchuk, G. (2011). The thank you economy. New York: Harper Business.

Chicago Style Citation

Vaynerchuk, Gary. The Thank You Economy. New York: Harper Business, 2011.

Cita MLA

Vaynerchuk, Gary. The Thank You Economy. New York: Harper Business, 2011.

Atenció: Aquestes cites poden no estar 100% correctes.