Gaya APA
M.M., D, K, S.
(2017).
Customer Services Excellent Teori dan Praktik
.
Jakarta:
Rajawali Pers.
Gaya MLA
M.M., Dr., Kasmir,, S.E.,.
"Customer Services Excellent Teori dan Praktik".
Jakarta:
Rajawali Pers,
2017.
Text.