Gaya APA
LOCKER, K, O., KACZMAREK, S, K.
(2004).
Business communication :
(
2nd ed.)
.
Boston:
McGraw-Hill.
Gaya MLA
LOCKER, Kitty, O.., KACZMAREK, Stephen, Kyo.
"Business communication :".
2nd ed.
Boston:
McGraw-Hill,
2004.
Buku.