Cita APA (7a ed.)

Barnes, H. (1927). The evolution of penology in Pennsylvania: A study in American social history. Bobbs-Merril.

Cita Chicago Style (17a ed.)

Barnes, Harry. The Evolution of Penology in Pennsylvania: A Study in American Social History. Indianapolis: Bobbs-Merril, 1927.

Cita MLA (9a ed.)

Barnes, Harry. The Evolution of Penology in Pennsylvania: A Study in American Social History. Bobbs-Merril, 1927.