Zeithaml, V. A., Bitner, M. J., & Gremler, D. D. (2013). Services marketing: Integrating customer focus across the firm (6th ed.). McGraw-Hill Irwin.
Čikaški stil citiranja (17. izdanje)Zeithaml, Valarie A., Mary Jo Bitner, i Dwayne D. Gremler. Services Marketing: Integrating Customer Focus Across the Firm. 6th ed. New York: McGraw-Hill Irwin, 2013.
MLA način citiranja (8. izdanje)Zeithaml, Valarie A., et al. Services Marketing: Integrating Customer Focus Across the Firm. 6th ed. McGraw-Hill Irwin, 2013.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.