APA (7th ed.) Citation

Gibson, A. C., & Nobel, P. S. (1986). The cactus primer. Harvard University Press.

Chicago Style (17th ed.) Citation

Gibson, Arthur C., and Park S. Nobel. The Cactus Primer. Cambridge, Mass.: Harvard University Press, 1986.

MLA (9th ed.) Citation

Gibson, Arthur C., and Park S. Nobel. The Cactus Primer. Harvard University Press, 1986.