Gaya APA
}, P., R., T., {., E., A. et al. (1986).
Basic Business English and Comunication .
New Jersey:
Prentce Hall Englewood Cliifs.
Gaya MLA
}, P., R., T., {., E., A. et al..
Basic Business English and Comunication.
New Jersey:
Prentce Hall Englewood Cliifs,
1986.
Text.