Dyfyniad APA

Biller, D. (1994). Informal gold mining and mercury pollution in Brazil. The World Bank, Policy Research Dept., Public Economic Division.

Dyfyniad Arddull Chicago

Biller, Dan. Informal Gold Mining and Mercury Pollution in Brazil. Washington, D.C: The World Bank, Policy Research Dept., Public Economic Division, 1994.

Dyfyniad MLA

Biller, Dan. Informal Gold Mining and Mercury Pollution in Brazil. The World Bank, Policy Research Dept., Public Economic Division, 1994.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.