Wildhorn, S. (1975). Issues in private security. Rand Corp.
Cita Chicago Style (17a ed.)Wildhorn, Sorrel. Issues in Private Security. Santa Monica, Cal: Rand Corp, 1975.
Cita MLA (8a ed.)Wildhorn, Sorrel. Issues in Private Security. Rand Corp, 1975.
Precaución: Estas citas no son 100% exactas.