APA (7th ed.) Citation

Walker, S. M. (2007). Soil. Lerner Publications Co..

Chicago Style (17th ed.) Citation

Walker, Sally M. Soil. Minneapolis: Lerner Publications Co., 2007.

MLA (9th ed.) Citation

Walker, Sally M. Soil. Lerner Publications Co., 2007.

Warning: These citations may not always be 100% accurate.