Gaya APA
Zeithaml, Valarie A., Parasuraman, A., Berry, Leonard L.. (1990).
Delivering Quality Service .
New York:
The Free Press.
Gaya Chicago
Zeithaml, Valarie A., Parasuraman, A., Berry, Leonard L..
Delivering Quality Service.
New York:
The Free Press,
1990.
Text.
Gaya MLA
Zeithaml, Valarie A., Parasuraman, A., Berry, Leonard L..
Delivering Quality Service.
New York:
The Free Press,
1990.
Text.
Gaya Turabian
Zeithaml, Valarie A., Parasuraman, A., Berry, Leonard L..
Delivering Quality Service.
New York:
The Free Press,
1990.
Print.