APA (7th ed.) Citation

Harder, L. D., & Barrett, S. C. H. (2006). Ecology and evolution of flowers. Oxford University Press.

Chicago Style (17th ed.) Citation

Harder, Lawrence D., and Spencer Charles Hilton Barrett. Ecology and Evolution of Flowers. Oxford ; New York: Oxford University Press, 2006.

MLA (9th ed.) Citation

Harder, Lawrence D., and Spencer Charles Hilton Barrett. Ecology and Evolution of Flowers. Oxford University Press, 2006.