Dyfyniad APA

Hussen, A. M. (2000). Principles of environmental economics: Economics, ecology and public policy. London: Routledge.

Dyfyniad Arddull Chicago

Hussen, Ahmed M. Principles of Environmental Economics: Economics, Ecology and Public Policy. London: Routledge, 2000.

Dyfyniad MLA

Hussen, Ahmed M. Principles of Environmental Economics: Economics, Ecology and Public Policy. London: Routledge, 2000.

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