Cita APA (7a ed.)

Hawkins, R., & Alpert, G. P. (1989). American prison systems. Prentice Hall.

Cita Chicago Style (17a ed.)

Hawkins, Richard, y Geoffrey P. Alpert. American Prison Systems. Englewood Cliffs, NJ: Prentice Hall, 1989.

Cita MLA (8a ed.)

Hawkins, Richard, y Geoffrey P. Alpert. American Prison Systems. Prentice Hall, 1989.