APA (7th ed.) Citation

Proctor, M., Lack, A., & Yeo, P. (1996). The natural history of pollination. Harper Collins Publishers.

Chicago Style (17th ed.) Citation

Proctor, Michael, Andrew Lack, and Peter Yeo. The Natural History of Pollination. London: Harper Collins Publishers, 1996.

MLA (8th ed.) Citation

Proctor, Michael, et al. The Natural History of Pollination. Harper Collins Publishers, 1996.