Gaya APA
Pramesthi, I., L. et al. (1986).
Basic Business English and Comunication .
New Jersey:
Prentce Hall Englewood Cliifs.
Gaya MLA
Pramesthi, I., L. et al..
Basic Business English and Comunication.
New Jersey:
Prentce Hall Englewood Cliifs,
1986.
Text.