Bell, C. R., Zemke, R., & Zielinski, D. (2007). Managing knock your socks off service (2nd ed.). AMACOM.
Cita Chicago Style (17a ed.)Bell, Chip R., Ron Zemke, y David Zielinski. Managing Knock Your Socks off Service. 2nd ed. New York: AMACOM, 2007.
Cita MLA (9a ed.)Bell, Chip R., et al. Managing Knock Your Socks off Service. 2nd ed. AMACOM, 2007.
Precaución: Estas citas no son 100% exactas.