United Nations Environment Programme-World Conservation Monitoring Centre (Content Partner); Mark McGinley (Topic Editor). 2009. "'W' National Park, Niger." In: Encyclopedia of Earth. Eds. Cutler J. Cleveland (Washington, D.C.: Environmental Information Coalition, National Council for Science and the Environment). onlineLưu trữ 2009-11-29 tại Wayback Machine
United Nations Environment Programme-World Conservation Monitoring Centre (Content Partner); Mark McGinley (Topic Editor). 2009. "'W' National Park, Niger." In: Encyclopedia of Earth. Eds. Cutler J. Cleveland (Washington, D.C.: Environmental Information Coalition, National Council for Science and the Environment). onlineLưu trữ 2009-11-29 tại Wayback Machine