Gaya APA
Dobson, Ann. (2005).
Grolier Business Library : writing business letters .
Hongkong:
Grolier International.
Gaya Chicago
Dobson, Ann.
Grolier Business Library : writing business letters.
Hongkong:
Grolier International,
2005.
Text.
Gaya MLA
Dobson, Ann.
Grolier Business Library : writing business letters.
Hongkong:
Grolier International,
2005.
Text.
Gaya Turabian
Dobson, Ann.
Grolier Business Library : writing business letters.
Hongkong:
Grolier International,
2005.
Print.