Gaya APA
Tjiptono, F.
(2004).
Prinsip-prinsip quality service (TQS)
(
4)
.
Yogyakarta:
Andi.
Gaya MLA
Tjiptono, Fandy.
"Prinsip-prinsip quality service (TQS)".
4
Yogyakarta:
Andi,
2004.
Text.