APA引文

United States. Soil Conservation Service. (1963). Land of Washington. U.S. Dept. of Agriculture, Soil Conservation Service.

Chicago Style (17th ed.) Citation

United States. Soil Conservation Service. Land of Washington. [Portland, Or.: U.S. Dept. of Agriculture, Soil Conservation Service, 1963.

MLA引文

United States. Soil Conservation Service. Land of Washington. U.S. Dept. of Agriculture, Soil Conservation Service, 1963.

警告：這些引文格式不一定是100％准確.