Gaya APA

Zoubek, C, E. (2017). Customer Services Excellent, Teori dan Praktik (Ed.1, Cet.1). Jakarta: Rajawali Press.

Gaya MLA

Zoubek, Charles, E.. "Customer Services Excellent, Teori dan Praktik". Ed.1, Cet.1 Jakarta: Rajawali Press, 2017. Text.