Cita APA (7a ed.)

Garber, P. R. (2007). Retention (1st edition.). HRD Press.

Cita Chicago Style (17a ed.)

Garber, Peter R. Retention. 1st edition. Amherst: HRD Press, 2007.

Cita MLA (9a ed.)

Garber, Peter R. Retention. 1st edition. HRD Press, 2007.