Ober, S. (2003). Contemporary business communication (5th ed.). Houghton Mifflin Co..
Cita Chicago (17th ed.)Ober, Scot. Contemporary Business Communication. 5th ed. Boston: Houghton Mifflin Co., 2003.
Cita MLA (8th ed.)Ober, Scot. Contemporary Business Communication. 5th ed. Houghton Mifflin Co., 2003.
Atenció: Aquestes cites poden no estar 100% correctes.