Gaya APA
Kasmir, .
(2017).
Customer Services Execellent : Teori dan Praktik
(
Cet.1)
.
Jakarta:
Rajawali Press.
Gaya MLA
Kasmir, .
"Customer Services Execellent : Teori dan Praktik".
Cet.1
Jakarta:
Rajawali Press,
2017.
Text.