APA (7th ed.) Zitazioa
Gardner, A. B. (2014). Grasses in your pocket: A guide to the prairie grasses of the Upper Midwest. University of Iowa Press.
Chicago Style (17th ed.) Zitazioa
Gardner, Anna B. Grasses in Your Pocket: A Guide to the Prairie Grasses of the Upper Midwest. Iowa City, Iowa: University of Iowa Press, 2014.
MLA (9th ed.) Zitazioa
Gardner, Anna B. Grasses in Your Pocket: A Guide to the Prairie Grasses of the Upper Midwest. University of Iowa Press, 2014.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.