APA (7th ed.) Citation

Proctor, M., Yeo, P., & Lack, A. (1996). The natural history of pollination. Timber Press.

Chicago Style (17th ed.) Citation

Proctor, Michael, Peter Yeo, and Andrew Lack. The Natural History of Pollination. Portland, Oregon: Timber Press, 1996.

MLA (9th ed.) Citation

Proctor, Michael, et al. The Natural History of Pollination. Timber Press, 1996.