Dyfyniad APA

Journal of planning and environmental law: Occasional papers. No.18, 1990.

Dyfyniad Arddull Chicago

Journal of Planning and Environmental Law: Occasional Papers. No.18, 1990.

Dyfyniad MLA

Journal of Planning and Environmental Law: Occasional Papers. No.18, 1990.

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