Gaya APA

Zeithaml, V, A. et al (2024). Services marketing: integrating customer focus across the firm (8th ed.). New York: McGraw-Hill.

Gaya MLA

Zeithaml, Valarie, A.. et al. "Services marketing: integrating customer focus across the firm". 8th ed. New York: McGraw-Hill, 2024. Buku/Printed Material.