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.) CitationèOpik, 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.) CitationèOpik, Helgi, et al. The Physiology of Flowering Plants. 4th ed. Cambridge University Press, 2005.
Warning: These citations may not always be 100% accurate.