APA (7th ed.) Citation

Helyer, N., Brown, K., & Cattlin, N. D. (2003). A color handbook of biological control in plant protection. Timber Press.

Chicago Style (17th ed.) Citation

Helyer, Neil, Kevin Brown, and Nigel D. Cattlin. A Color Handbook of Biological Control in Plant Protection. Portland, Or: Timber Press, 2003.

MLA (9th ed.) Citation

Helyer, Neil, et al. A Color Handbook of Biological Control in Plant Protection. Timber Press, 2003.