IUCN Regional Office for Southern Africa. (2018). transboundary natural resource disputes in Africa. IUCN, Regional Office for Southern Africa.
芝加哥风格引文IUCN Regional Office for Southern Africa. Transboundary Natural Resource Disputes in Africa. [Harare]: IUCN, Regional Office for Southern Africa, 2018.
MLA引文IUCN Regional Office for Southern Africa. Transboundary Natural Resource Disputes in Africa. IUCN, Regional Office for Southern Africa, 2018.
警告：这些引文格式不一定是100％准确.