APA (7th ed.) Citation

, 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.