Gaya APA
Himstreet, W, C., Baty, W, M. (1987).
Business Communications: principles and methods .
Boston:
PWS-Kent Publishing Company.
Gaya MLA
Himstreet, William, C.., Baty, Wayne, Murlin.
"Business Communications: principles and methods".
Boston:
PWS-Kent Publishing Company,
1987.
Text.