APA (7th ed.) Citation

Alexander, E. J. (1941). Desert Cacti of the Americas. Zenodo.

Chicago Style (17th ed.) Citation

Alexander, E. J. Desert Cacti of the Americas. Zenodo, 1941.

MLA (9th ed.) Citation

Alexander, E. J. Desert Cacti of the Americas. Zenodo, 1941.

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