Biller, D. (1994). Informal gold mining and mercury pollution in Brazil. The World Bank, Policy Research Dept., Public Economic Division.
Chicago-referens (17:e uppl.)Biller, Dan. Informal Gold Mining and Mercury Pollution in Brazil. Washington, D.C: The World Bank, Policy Research Dept., Public Economic Division, 1994.
MLA-referens (9:e uppl.)Biller, Dan. Informal Gold Mining and Mercury Pollution in Brazil. The World Bank, Policy Research Dept., Public Economic Division, 1994.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.