Gaya APA
Customer Services Exellent Teori dan Praktik. (2017).
Jakarta:
[s.n.].
Gaya Chicago
Customer Services Exellent Teori dan Praktik.
.
Jakarta:
[s.n.],
2017.
Text.
Gaya MLA
Customer Services Exellent Teori dan Praktik.
.
Jakarta:
[s.n.],
2017.
Text.
Gaya Turabian
Customer Services Exellent Teori dan Praktik.
Jakarta:
[s.n.],
2017.
Print.