APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

Benson, Lyman David. The Cacti of the United States and Canada. Stanford Univ. Pr, 1982.

Warning: These citations may not always be 100% accurate.