Gaya APA
GUFFEY, M, E., Babcock, B, D.
(2008).
BUSINESS COMMUNICATION
(
ASIAN EDITION)
.
Singapore:
THOMSON LEARNING.
Gaya MLA
GUFFEY, Mary, Ellen., Babcock, Bertha, Du.
"BUSINESS COMMUNICATION".
ASIAN EDITION
Singapore:
THOMSON LEARNING,
2008.
Text.