Cope, R. G., & Hannah, W. (1975). Revolving college doors: The causes and consequences of dropping out, stopping out, and transferring. Wiley.

Cope, Robert G., and William Hannah. Revolving College Doors: The Causes and Consequences of Dropping Out, Stopping Out, and Transferring. New York: Wiley, 1975.

Cope, Robert G., and William Hannah. Revolving College Doors: The Causes and Consequences of Dropping Out, Stopping Out, and Transferring. Wiley, 1975.