Cita APA (7th ed.)
Calvin, R. J. (2001). Sales management. McGraw-Hill.
Cita Chicago (17th ed.)
Calvin, Robert J. Sales Management. New York: McGraw-Hill, 2001.
Cita MLA (9th ed.)
Calvin, Robert J. Sales Management. McGraw-Hill, 2001.
Atenció: Aquestes cites poden no estar 100% correctes.