APA Style

Zeithaml, V, A. et al (2013). Services Marketing : Integrating Customer Focus Across The Firm (Edisi Ke-6). USA: McGraw-Hill.

MLA Style

Zeithaml, Valarie, A. et al. "Services Marketing : Integrating Customer Focus Across The Firm". Edisi Ke-6 USA: McGraw-Hill, 2013. -- 1884-1954. -- Haji>