Dyfyniad APA

(2005). Encyclopaedia of environment - volume 1: Environment: problems and policies. Atlantic publishers.

Dyfyniad Arddull Chicago

Encyclopaedia of Environment - Volume 1: Environment: Problems and Policies. New Delhi: Atlantic publishers, 2005.

Dyfyniad MLA

Encyclopaedia of Environment - Volume 1: Environment: Problems and Policies. Atlantic publishers, 2005.

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