Cita APA (7a ed.)

United States Department of Agriculture (USDA). (1938). Yearbook of agriculture, 1938. Soils & men. Departament of Agriculture.

Cita Chicago Style (17a ed.)

United States Department of Agriculture (USDA). Yearbook of Agriculture, 1938. Soils & Men. Washington: Departament of Agriculture, 1938.

Cita MLA (9a ed.)

United States Department of Agriculture (USDA). Yearbook of Agriculture, 1938. Soils & Men. Departament of Agriculture, 1938.