Gaya APA
Successful English For Bussines. (2007).
Hoboken, NJ:
PT Palado Asima Agung.
Gaya Chicago
Successful English For Bussines.
pertama.
Hoboken, NJ:
PT Palado Asima Agung,
2007.
Text.
Gaya MLA
Successful English For Bussines.
pertama.
Hoboken, NJ:
PT Palado Asima Agung,
2007.
Text.
Gaya Turabian
Successful English For Bussines.
Hoboken, NJ:
PT Palado Asima Agung,
2007.
Print.