Gaya APA
Tschohl, John. (2003).
Achieving Excellence Through Customer Service .
jakarta:
Sinar Grafika.
Gaya Chicago
Tschohl, John.
Achieving Excellence Through Customer Service.
jakarta:
Sinar Grafika,
2003.
Text.
Gaya MLA
Tschohl, John.
Achieving Excellence Through Customer Service.
jakarta:
Sinar Grafika,
2003.
Text.
Gaya Turabian
Tschohl, John.
Achieving Excellence Through Customer Service.
jakarta:
Sinar Grafika,
2003.
Print.