Zeithaml, V. A., Bitner, M. J., & Gremler, D. D. (2006). Services marketing: Integrating customer focus across the firm (4th ed.). McGraw-Hill/Irwin.
Čikaški stil citiranja (17. izdanje)Zeithaml, Valerie A., Mary Jo Bitner, i Dwayne D. Gremler. Services Marketing: Integrating Customer Focus Across the Firm. 4th ed. New York, N.Y: McGraw-Hill/Irwin, 2006.
MLA način citiranja (9. izdanje)Zeithaml, Valerie A., et al. Services Marketing: Integrating Customer Focus Across the Firm. 4th ed. McGraw-Hill/Irwin, 2006.
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