Dyfyniad APA

(1996). Universal's environment and pollution law manual. Universal Law Publishing.

Dyfyniad Arddull Chicago

Universal's Environment and Pollution Law Manual. Delhi: Universal Law Publishing, 1996.

Dyfyniad MLA

Universal's Environment and Pollution Law Manual. Universal Law Publishing, 1996.

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