APA (7th ed.) Citation

èOpik, H., Rolfe, S. A., Willis, A. J., & Street, H. E. (2005). The physiology of flowering plants (4th ed.). Cambridge University Press.

Chicago Style (17th ed.) Citation

èOpik, Helgi, Stephen A. Rolfe, A. J. Willis, and H. E. Street. The Physiology of Flowering Plants. 4th ed. Cambridge, Eng: Cambridge University Press, 2005.

MLA (9th ed.) Citation

èOpik, Helgi, et al. The Physiology of Flowering Plants. 4th ed. Cambridge University Press, 2005.