Gaya APA

Murphy, H, A., Hildebrandt, H, W. (1991). Effective Business Communications (Sixth edition) (ed.6). New York: McGraw-Hill Companies.

Gaya MLA

Murphy, Herta, A.., Hildebrandt, Herbert, William. "Effective Business Communications (Sixth edition)". ed.6 New York: McGraw-Hill Companies, 1991. Text.