Cita APA (7th ed.)
Murphy, H. A., Hildebrandt, H. W., & Thomas, J. P. (1997). Effective business communications (7th ed.). McGraw-Hill Companies.
Cita Chicago (17th ed.)
Murphy, Herta A., Herbert William Hildebrandt, i Jane P. Thomas. Effective Business Communications. 7th ed. New York: McGraw-Hill Companies, 1997.
Cita MLA (9th ed.)
Murphy, Herta A., et al. Effective Business Communications. 7th ed. McGraw-Hill Companies, 1997.
Atenció: Aquestes cites poden no estar 100% correctes.