Regents pub. co. (1977). The Blue book of business English. Regent Pub.
Citación estilo ChicagoRegents pub. co. The Blue Book of Business English. New york: Regent Pub, 1977.
Cita MLARegents pub. co. The Blue Book of Business English. Regent Pub, 1977.
Warning: These citations may not always be 100% accurate.