APA (7th ed.) Citation

Benson, L. D. (1982). The cacti of the United States and Canada. Stanford University Press.

Chicago Style (17th ed.) Citation

Benson, Lyman David. The Cacti of the United States and Canada. Stanford, Calif.: Stanford University Press, 1982.

MLA (9th ed.) Citation

Benson, Lyman David. The Cacti of the United States and Canada. Stanford University Press, 1982.