Dyfyniad APA

National conference on Policy Issues in Outdoor Recreation, Utah, 1966. (1966). Proceedings. Department of the Interior.

Dyfyniad Arddull Chicago

National conference on Policy Issues in Outdoor Recreation, Utah, 1966. Proceedings. Logan, Utah: Department of the Interior, 1966.

Dyfyniad MLA

National conference on Policy Issues in Outdoor Recreation, Utah, 1966. Proceedings. Department of the Interior, 1966.

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