* {{cite bookref-llibre|authorautor=Europa Publications|authorlinkenllaçautor=Europa Publications|titletítol=Africa South of the Sahara 2004|url=https://books.google.com/books?id=jj4J-AXGDaQC&pg=PA49|yearany=2003|publishereditorial=Psychology Press|isbn=978-1-85743-183-4|ref={{sfnRef|Europa Publications|2003}}}}
* {{cite bookref-llibre|titletítol=Minerals Yearbook, 2008, V. 3, Area Reports, International, Africa and the Middle East|url=https://books.google.com/books?id=cOUq1JKeQ18C&pg=SA2-PA12|datedata=2010|publishereditorial=Government Printing Office|isbn=978-1-4113-2965-2|ref={{sfnRef|Minerals Yearbook|2010}}}}
* {{cite bookref-llibre|authorautor=Ibp Inc|titletítol=Angola Oil and Gas Exploration Laws and Regulation Handbook Volume 1 Strategic Information and Basic Laws|url=https://books.google.com/books?id=7-N8AwAAQBAJ&pg=PA23|datedata=2014|publishereditorial=Int'l Business Publications|isbn=978-1-4330-7852-1|ref={{sfnRef|Int'l Business|2014}}}}
* {{cite bookref-llibre|ref=harv|firstnom=W. Martin |lastcognom=James|titletítol=Historical Dictionary of Angola|url=https://books.google.com/books?id=4A5NM4IeBXgC&pg=PA147|datedata=2011|publishereditorial=Scarecrow Press|isbn=978-0-8108-7458-9|oclc=712777842}}
* {{cite bookref-llibre|authorautor=United States. Central Intelligence Agency|authorlinkenllaçautor=United States. Central Intelligence Agency|titletítol=Angola|url=https://books.google.com/books?id=2XwzfdiBfKoC&pg=PA29|yearany=1990|publishereditorial=Human Rights Watch|id=GGKEY:379Y7T2K4UX|ref={{sfnRef|Central Intelligence Agency|1990}}}}
* {{cite bookref-llibre|ref=harv|firstnom=Alex |lastcognom=Vines|titletítol=Still Killing: Landmines in Southern Africa|url=https://books.google.com/books?id=CFFdl5colg8C&pg=PA54|yearany=1997|publishereditorial=Human Rights Watch|isbn=978-1-56432-206-7|oclc=246170324}}
* {{cite bookref-llibre|ref=harv|firstnom=Stephen L. |lastcognom=Weigert|titletítol=Angola: A Modern Military History, 1961-2002|url=https://books.google.com/books?id=LdzJAAAAQBAJ&pg=PA153|datedata=2011|publishereditorial=Palgrave Macmillan|isbn=978-0-230-33783-1|oclc=759166807}}