Dyfyniad APA

Simonds, J. O. (1978). Earthscape: A manual of environmental planning. McGraw-Hill.

Dyfyniad Arddull Chicago

Simonds, John Ormsbee. Earthscape: A Manual of Environmental Planning. New York: McGraw-Hill, 1978.

Dyfyniad MLA

Simonds, John Ormsbee. Earthscape: A Manual of Environmental Planning. McGraw-Hill, 1978.

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