APA (7th ed.) Citation

Willis, K. J., & McElwain, J. C. (2002). The evolution of palnts. Oxford university press.

Chicago Style (17th ed.) Citation

Willis, K. J., and J. C. McElwain. The Evolution of Palnts. Oxford: Oxford university press, 2002.

MLA (8th ed.) Citation

Willis, K. J., and J. C. McElwain. The Evolution of Palnts. Oxford university press, 2002.