Gaya APA
Poe, Roy W.. (2004).
Handbook of business letters .
Jakarta:
Bhuana Ilmu Populer.
Gaya Chicago
Poe, Roy W..
Handbook of business letters.
Jakarta:
Bhuana Ilmu Populer,
2004.
Text.
Gaya MLA
Poe, Roy W..
Handbook of business letters.
Jakarta:
Bhuana Ilmu Populer,
2004.
Text.
Gaya Turabian
Poe, Roy W..
Handbook of business letters.
Jakarta:
Bhuana Ilmu Populer,
2004.
Print.