Gaya APA

Zeithaml, V, A., Bitner, M, J. (2000). Services Marketing : Integrating Customer Focus Across The Firm (2). Boston: Irwin McGraw-Hill.

Gaya MLA

Zeithaml, Valarie, A.., Bitner, Mary, Jo. "Services Marketing : Integrating Customer Focus Across The Firm". 2 Boston: Irwin McGraw-Hill, 2000. Text.