Langan, P. A. (1991). Race of prisoners admitted to state and federal institutions, 1926 - 86. U.S. Department of Justice.
Cita Chicago Style (17a ed.)Langan, Patrick A. Race of Prisoners Admitted to State and Federal Institutions, 1926 - 86. Washington, DC: U.S. Department of Justice, 1991.
Cita MLA (9a ed.)Langan, Patrick A. Race of Prisoners Admitted to State and Federal Institutions, 1926 - 86. U.S. Department of Justice, 1991.
Precaución: Estas citas no son 100% exactas.