Cita APA (7a ed.)

United States Department of Agriculture. (1996). Soil survey laboratory: Methods manual. USDA.

Cita Chicago Style (17a ed.)

United States Department of Agriculture. Soil Survey Laboratory: Methods Manual. Washington,D C: USDA, 1996.

Cita MLA (8a ed.)

United States Department of Agriculture. Soil Survey Laboratory: Methods Manual. USDA, 1996.