International Penitentiary Congress (Estocolm. (1877). International Penitentiary Congress. s.n.].
Cita Chicago (17th ed.)International Penitentiary Congress (Estocolm. International Penitentiary Congress. [New York?: s.n.], 1877.
Cita MLA (9th ed.)International Penitentiary Congress (Estocolm. International Penitentiary Congress. s.n.], 1877.
Atenció: Aquestes cites poden no estar 100% correctes.