APA (7th ed.) Citation

Pollard, E. (1993). Monitoring butterflies for ecology and conservation. Institute of Terrestrial Ecology.

Chicago Style (17th ed.) Citation

Pollard, E. Monitoring Butterflies for Ecology and Conservation. London: Institute of Terrestrial Ecology, 1993.

MLA (9th ed.) Citation

Pollard, E. Monitoring Butterflies for Ecology and Conservation. Institute of Terrestrial Ecology, 1993.