APA (7th ed.) Citation

Benson, L. D. (1950). The cacti of Arizona ([2d ed.].). University of Arizona Press.

Chicago Style (17th ed.) Citation

Benson, Lyman David. The Cacti of Arizona. [2d ed.]. Tucson: University of Arizona Press, 1950.

MLA (9th ed.) Citation

Benson, Lyman David. The Cacti of Arizona. [2d ed.]. University of Arizona Press, 1950.