Dyfyniad APA

Society of Environmental Communications. (1992). (Journal) Down to earth. Society of Environmental Communications.

Dyfyniad Arddull Chicago

Society of Environmental Communications. (Journal) Down to Earth. New Delhi: Society of Environmental Communications, 1992.

Dyfyniad MLA

Society of Environmental Communications. (Journal) Down to Earth. Society of Environmental Communications, 1992.

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