Zemke, R., & Anderson, K. (2003). Delivering knock your socks off service (3rd ed.). AMACOM.
Cita Chicago Style (17a ed.)Zemke, Ron, y Kristin Anderson. Delivering Knock Your Socks off Service. 3rd ed. New York: AMACOM, 2003.
Cita MLA (8a ed.)Zemke, Ron, y Kristin Anderson. Delivering Knock Your Socks off Service. 3rd ed. AMACOM, 2003.
Precaución: Estas citas no son 100% exactas.