Cita APA (7th ed.)
Hanna, M. S. (1998). Communication in Business and professional settings (4th ed.). McGraw-Hill Companies.
Cita Chicago (17th ed.)
Hanna, Michael S. Communication in Business and Professional Settings. 4th ed. Iowa: McGraw-Hill Companies, 1998.
Cita MLA (9th ed.)
Hanna, Michael S. Communication in Business and Professional Settings. 4th ed. McGraw-Hill Companies, 1998.
Atenció: Aquestes cites poden no estar 100% correctes.