Gaya APA
dkk, M, E, G.
(2006).
Business Communication Process & Product
(
ed. 4)
.
JAKARTA:
SALEMBA EMPAT.
Gaya MLA
dkk, Marry, Ellen, Guffey,.
"Business Communication Process & Product".
ed. 4
JAKARTA:
SALEMBA EMPAT,
2006.
Text.