Gaya APA
Dobson, Ann. (1999).
Groiler Business Library : Writting business letters .
Hongkong:
Grolier International.
Gaya Chicago
Dobson, Ann.
Groiler Business Library : Writting business letters.
Hongkong:
Grolier International,
1999.
Text.
Gaya MLA
Dobson, Ann.
Groiler Business Library : Writting business letters.
Hongkong:
Grolier International,
1999.
Text.
Gaya Turabian
Dobson, Ann.
Groiler Business Library : Writting business letters.
Hongkong:
Grolier International,
1999.
Print.