Dyfyniad APA

(1977). Man and environment: Man's impact on the environment. Open University.

Dyfyniad Arddull Chicago

Man and Environment: Man's Impact on the Environment. Walton Hall: Open University, 1977.

Dyfyniad MLA

Man and Environment: Man's Impact on the Environment. Open University, 1977.

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