National conference on Policy Issues in Outdoor Recreation, Utah, 1966. (1966). Proceedings. Department of the Interior.
芝加哥风格引文National conference on Policy Issues in Outdoor Recreation, Utah, 1966. Proceedings. Logan, Utah: Department of the Interior, 1966.
MLA引文National conference on Policy Issues in Outdoor Recreation, Utah, 1966. Proceedings. Department of the Interior, 1966.
警告：这些引文格式不一定是100％准确.