Cita APA (7a ed.)

Barkworth, M. E. (2007). Manual of Grasses for North America. Intermountain Herbarium and Utah State University Press.

Cita Chicago Style (17a ed.)

Barkworth, Mary E. Manual of Grasses for North America. Logan, Utah: Intermountain Herbarium and Utah State University Press, 2007.

Cita MLA (8a ed.)

Barkworth, Mary E. Manual of Grasses for North America. Intermountain Herbarium and Utah State University Press, 2007.