APA (7th ed.) Citation

Smith, J. P., & Simpson, K. (2014). Field guide to grasses of California. University of California Press.

Chicago Style (17th ed.) Citation

Smith, James P., and Kathy Simpson. Field Guide to Grasses of California. Oakland, California: University of California Press, 2014.

MLA (9th ed.) Citation

Smith, James P., and Kathy Simpson. Field Guide to Grasses of California. University of California Press, 2014.