Herta A murphy. (1997). Effective business communications/7e (7th ed.). Mc Graw Hill.
Chicago Edition CitationHerta A murphy. Effective Business Communications/7e. 7th ed. New york: Mc Graw Hill, 1997.
Cita MLAHerta A murphy. Effective Business Communications/7e. 7th ed. Mc Graw Hill, 1997.
Atenció: Aquestes cites poden no estar 100% correctes.