UNIDIR Ginebra. (1997). Operacion CEIBO. United Nations.
Чикаго маягийн жагсаалтUNIDIR Ginebra. Operacion CEIBO. Geneva: United Nations, 1997.
MLA ишлэлUNIDIR Ginebra. Operacion CEIBO. United Nations, 1997.
Warning: These citations may not always be 100% accurate.