Gaya APA
Humphries, John. (2005).
Grolier Business Library : how to manage a sales team .
Hongkong:
Grolier International.
Gaya Chicago
Humphries, John.
Grolier Business Library : how to manage a sales team.
Hongkong:
Grolier International,
2005.
Text.
Gaya MLA
Humphries, John.
Grolier Business Library : how to manage a sales team.
Hongkong:
Grolier International,
2005.
Text.
Gaya Turabian
Humphries, John.
Grolier Business Library : how to manage a sales team.
Hongkong:
Grolier International,
2005.
Print.