Cita APA (7th ed.)

Zeithaml, V. A., Bitner, M. J., & Gremler, D. D. (2009). Services marketing: Integrating customer focus across the firm (5th ed.). McGraw Hill.

Cita Chicago (17th ed.)

Zeithaml, Valarie A., Mary Jo Bitner, i Dwayne D. Gremler. Services Marketing: Integrating Customer Focus Across the Firm. 5th ed. Boston: McGraw Hill, 2009.

Cita MLA (9th ed.)

Zeithaml, Valarie A., et al. Services Marketing: Integrating Customer Focus Across the Firm. 5th ed. McGraw Hill, 2009.