Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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