APA (7th ed.) Citation

Beck, C. B. (1988). Origin and evolution of gymnosperms. Columbia University Press.

Chicago Style (17th ed.) Citation

Beck, Charles B. Origin and Evolution of Gymnosperms. New York: Columbia University Press, 1988.

MLA (9th ed.) Citation

Beck, Charles B. Origin and Evolution of Gymnosperms. Columbia University Press, 1988.