APA (7th ed.) Citation

Pollard, E., & Yates, T. J. (1993). Monitoring butterflies for ecology and conservation: The British butterfly monitoring scheme. Chapman & Hall.

Chicago Style (17th ed.) Citation

Pollard, E., and T. J. Yates. Monitoring Butterflies for Ecology and Conservation: The British Butterfly Monitoring Scheme. London, UK ; New York, NY, USA: Chapman & Hall, 1993.

MLA (9th ed.) Citation

Pollard, E., and T. J. Yates. Monitoring Butterflies for Ecology and Conservation: The British Butterfly Monitoring Scheme. Chapman & Hall, 1993.