Dyfyniad APA

Vandeveer,Donald Pierce, C. (2003). The environmental ethics & policy book (Third.). Holly Allen.

Dyfyniad Arddull Chicago

Vandeveer,Donald Pierce, Christine. The Environmental Ethics & Policy Book. Third. Canada: Holly Allen, 2003.

Dyfyniad MLA

Vandeveer,Donald Pierce, Christine. The Environmental Ethics & Policy Book. Third. Holly Allen, 2003.

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