Pollard, E., & Yates, T. J. (1993). Monitoring butterflies for ecology and conservation: The British butterfly monitoring scheme. Chapman & Hall.
Style de citation Chicago (17e éd.)Pollard, Ernest, et Tina J. Yates. Monitoring Butterflies for Ecology and Conservation: The British Butterfly Monitoring Scheme. London: Chapman & Hall, 1993.
Style de citation MLA (9e éd.)Pollard, Ernest, et Tina J. Yates. Monitoring Butterflies for Ecology and Conservation: The British Butterfly Monitoring Scheme. Chapman & Hall, 1993.
Attention : ces citations peuvent ne pas être correctes à 100%.