APA
Murphy H. A., Peck C. E., . (1976). Effective business communications. New York: McGraw-Hill.
Chicago
Murphy Herta A, Peck Charles Edwin, . 1976. Effective business communications. New York: McGraw-Hill.
Harvard
Murphy H. A., Peck C. E., . (1976). Effective business communications. New York: McGraw-Hill.
MLA
Murphy Herta A, Peck Charles Edwin, . Effective business communications. New York: McGraw-Hill. 1976.