Gaya APA

Zeithaml, V, A. (2023). Service marketing : integrating customer focus across the firm 8th ed (8th ed). New York: Mc Graw Hill.

Gaya MLA

Zeithaml, Valarie, A. "Service marketing : integrating customer focus across the firm 8th ed". 8th ed New York: Mc Graw Hill, 2023. Buku Wajib.