Gaya APA
Martin, William B.. (2004).
Quality Customer Service .
Jakarta:
PPM.
Gaya Chicago
Martin, William B..
Quality Customer Service.
Jakarta:
PPM,
2004.
.
Gaya MLA
Martin, William B..
Quality Customer Service.
Jakarta:
PPM,
2004.
.
Gaya Turabian
Martin, William B..
Quality Customer Service.
Jakarta:
PPM,
2004.
.