APA

World Resources Institute, .A Guide to world resources 2002-2004: desicions for the earth balance, voice and power. Washington, D.C: S.n.

Chicago

World Resources Institute, .A Guide to world resources 2002-2004: desicions for the earth balance, voice and power. Washington, D.C: S.n.

Harvard

World Resources Institute, .A Guide to world resources 2002-2004: desicions for the earth balance, voice and power. Washington, D.C: S.n.

MLA

World Resources Institute, .Washington, D.C: S.n. .