United Nations Social Defence Research Institute. (1988). UNSDRI at twenty: 1968 - 1988.
Cita Chicago Style (17a ed.)United Nations Social Defence Research Institute. UNSDRI at Twenty: 1968 - 1988. Rome, 1988.
Cita MLA (9a ed.)United Nations Social Defence Research Institute. UNSDRI at Twenty: 1968 - 1988. 1988.
Precaución: Estas citas no son 100% exactas.