Cita APA (7th ed.)
O'Hair, H. D., O'Hair, M. J., & O'Rourke, J. S. (2001). Business communication: A framework for success. South-Western College.
Cita Chicago (17th ed.)
O'Hair, H. Dan, Mary John O'Hair, i James S. O'Rourke. Business Communication: A Framework for Success. Australia: South-Western College, 2001.
Cita MLA (9th ed.)
O'Hair, H. Dan, et al. Business Communication: A Framework for Success. South-Western College, 2001.
Atenció: Aquestes cites poden no estar 100% correctes.