Gaya APA
Payne, S. (2003).
Grolier Business Library: Delivering Customer Service (Deluxe).
Hongkong:
Grolier International Inc..
Gaya MLA
Payne, Shelia.
"Grolier Business Library: Delivering Customer Service".
Deluxe
Hongkong:
Grolier International Inc.,
2003.
Texts.