APA

U.S. Dept. Of Interior Water, .Earth Manual: A Guide To The Use Of Soils. : .

Chicago

U.S. Dept. Of Interior Water, .Earth Manual: A Guide To The Use Of Soils. : .

Harvard

U.S. Dept. Of Interior Water, .Earth Manual: A Guide To The Use Of Soils. : .

MLA

U.S. Dept. Of Interior Water, .: . .