Millennium Ecosystem Assessment (2005). Ecosystems and Human Well-being: Biodiversity Synthesis. World Resources Institute, Washington, DC.[1] (页面存档备份,存于互联网档案馆)
G. Schmidt. 2005. Ecology & Anthropology: A Field Without Future? Ecological and Environmental Anthropology. 1(1): 13-15. 存档副本. [2014-06-23]. (原始内容存档于2012-10-24).
Millennium Ecosystem Assessment (2005). Ecosystems and Human Well-being: Biodiversity Synthesis. World Resources Institute, Washington, DC.[1] (页面存档备份,存于互联网档案馆)
G. Schmidt. 2005. Ecology & Anthropology: A Field Without Future? Ecological and Environmental Anthropology. 1(1): 13-15. 存档副本. [2014-06-23]. (原始内容存档于2012-10-24).