APA (7th ed.) Citation

Opik, H., & Rolfe, S. The physiology of flowering plants (4th ed.). Cambridge University Press.

Chicago Style (17th ed.) Citation

Opik, Helgi, and Stephen Rolfe. The Physiology of Flowering Plants. 4th ed. Cambridge: Cambridge University Press.

MLA (9th ed.) Citation

Opik, Helgi, and Stephen Rolfe. The Physiology of Flowering Plants. 4th ed. Cambridge University Press.