Gaya APA
Poe, Roy W.. (2004).
Handbook of Business Letters .
New York:
PT Buana Ilmu Populer.
Gaya Chicago
Poe, Roy W..
Handbook of Business Letters.
New York:
PT Buana Ilmu Populer,
2004.
Buku.
Gaya MLA
Poe, Roy W..
Handbook of Business Letters.
New York:
PT Buana Ilmu Populer,
2004.
Buku.
Gaya Turabian
Poe, Roy W..
Handbook of Business Letters.
New York:
PT Buana Ilmu Populer,
2004.
Buku.