United States. Agricultural Research Service & Holtan, H. N. (1975). USDAHL-74 revised model of watershed hydrology: A United States contribution to the international hydrological decade. Agricultural Research Service, U.S. Dept. of Agriculture.
Chicago Style (17th ed.) CitationUnited States. Agricultural Research Service and H. N. Holtan. USDAHL-74 Revised Model of Watershed Hydrology: A United States Contribution to the International Hydrological Decade. Washington: Agricultural Research Service, U.S. Dept. of Agriculture, 1975.
MLA (9th ed.) CitationUnited States. Agricultural Research Service and H. N. Holtan. USDAHL-74 Revised Model of Watershed Hydrology: A United States Contribution to the International Hydrological Decade. Agricultural Research Service, U.S. Dept. of Agriculture, 1975.