Gaya APA
A.Zeithaml, V.
(2000).
Services Marketing Integrating Customer Focus A Crossthe Firm
(
2)
.
Boston:
McGraw Hill.
Gaya MLA
A.Zeithaml, Valarie.
"Services Marketing Integrating Customer Focus A Crossthe Firm".
2
Boston:
McGraw Hill,
2000.
Text.