Gaya APA
MURPHY, H, A., PECK, C, E. (1980).
Effective Business Communication. (3).
New York:
McGraw-Hill Book Company.
Gaya MLA
MURPHY, Herta, A.., PECK, Charles, E.
"Effective Business Communication.".
3
New York:
McGraw-Hill Book Company,
1980.
Text.