APA

United States Departament of Agriculture U., . (1951). Yearbook of agriculture 1950-1951 : crops in peace and war. Washington: United States Government Printing Office.

Chicago

United States Departament of Agriculture Usda, . 1951. Yearbook of agriculture 1950-1951 : crops in peace and war. Washington: United States Government Printing Office.

Harvard

United States Departament of Agriculture U., . (1951). Yearbook of agriculture 1950-1951 : crops in peace and war. Washington: United States Government Printing Office.

MLA

United States Departament of Agriculture Usda, . Yearbook of agriculture 1950-1951 : crops in peace and war. Washington: United States Government Printing Office. 1951.