APA

Wittenberg M. A., Voiles P. R., . (1979). Modern business English: a text-workbook for colleges. New York: Gregg Division, McGraw-Hill.

Chicago

Wittenberg Mary Alice, Voiles Price R, . 1979. Modern business English: a text-workbook for colleges. New York: Gregg Division, McGraw-Hill.

Harvard

Wittenberg M. A., Voiles P. R., . (1979). Modern business English: a text-workbook for colleges. New York: Gregg Division, McGraw-Hill.

MLA

Wittenberg Mary Alice, Voiles Price R, . Modern business English: a text-workbook for colleges. New York: Gregg Division, McGraw-Hill. 1979.