Dyfyniad APA

VanDeVeer, D. (1998). The Environment ethics and policy book: Philosophy, ecology, economics. Wadsworth; ITP.

Dyfyniad Arddull Chicago

VanDeVeer, Donald. The Environment Ethics and Policy Book: Philosophy, Ecology, Economics. Belmont, CA: Wadsworth; ITP, 1998.

Dyfyniad MLA

VanDeVeer, Donald. The Environment Ethics and Policy Book: Philosophy, Ecology, Economics. Wadsworth; ITP, 1998.

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