Cita APA (7a ed.)

Estados Unidos. Department of Agriculture. (1951). Soil survey manual. United States Department of Agriculture.

Cita Chicago Style (17a ed.)

Estados Unidos. Department of Agriculture. Soil Survey Manual. Washington: United States Department of Agriculture, 1951.

Cita MLA (8a ed.)

Estados Unidos. Department of Agriculture. Soil Survey Manual. United States Department of Agriculture, 1951.