Dyfyniad APA

Gray, O. S. (1973). Cases and materials on environmental law (2nd ed.). The Bureau of National Affairs.

Dyfyniad Arddull Chicago

Gray, Oscar S. Cases and Materials on Environmental Law. 2nd ed. Washington: The Bureau of National Affairs, 1973.

Dyfyniad MLA

Gray, Oscar S. Cases and Materials on Environmental Law. 2nd ed. The Bureau of National Affairs, 1973.

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