, K. t. s. (1987). Keys to soil taxonomy by soil survey staff. Ethaca.
Chicago Style (17th ed.) Citation, Keys to soil. Keys to Soil Taxonomy by Soil Survey Staff. Ethaca, 1987.
MLA (8th ed.) Citation, Keys to soil. Keys to Soil Taxonomy by Soil Survey Staff. Ethaca, 1987.
Warning: These citations may not always be 100% accurate.