Gaya APA
Kasmir, .
(2018).
Customer services excellent : teori dan praktik
(
Cet.2)
.
Depok:
Rajawali Pers.
Gaya MLA
Kasmir, .
"Customer services excellent : teori dan praktik".
Cet.2
Depok:
Rajawali Pers,
2018.
Text.