United States. National Park Service. Division of Ranger Activities. (1958). Handbook for fire lookouts. Division of Ranger Activities, U.S. Dept. of the Interior, National Park Service.
Chicagoスタイル(17版)引用形式United States. National Park Service. Division of Ranger Activities. Handbook for Fire Lookouts. [United States]: Division of Ranger Activities, U.S. Dept. of the Interior, National Park Service, 1958.
MLA(8版)引用形式United States. National Park Service. Division of Ranger Activities. Handbook for Fire Lookouts. Division of Ranger Activities, U.S. Dept. of the Interior, National Park Service, 1958.
警告: この引用は必ずしも正確ではありません.