APA (7th ed.) Citation

Takhtadzhi︠a︡n, A. L., & Cronquist, A. (1986). Floristic regions of the world. University of California Press.

Chicago Style (17th ed.) Citation

Takhtadzhi︠a︡n, A. L., and Arthur Cronquist. Floristic Regions of the World. Berkeley: University of California Press, 1986.

MLA (9th ed.) Citation

Takhtadzhi︠a︡n, A. L., and Arthur Cronquist. Floristic Regions of the World. University of California Press, 1986.