APA

(1999). An environmental study of artisanal, small, and medium mining in Bolivia, Chile, and Peru. Washington, D. C: World Bank.

Chicago

1999. An environmental study of artisanal, small, and medium mining in Bolivia, Chile, and Peru. Washington, D. C: World Bank.

Harvard

(1999). An environmental study of artisanal, small, and medium mining in Bolivia, Chile, and Peru. Washington, D. C: World Bank.

MLA

An environmental study of artisanal, small, and medium mining in Bolivia, Chile, and Peru. Washington, D. C: World Bank. 1999.