Cita APA

Pollard, E., & Yates, T. J. (1993). Monitoring butterflies for ecology and conservation: The British Butteerfly Monitoring Scheme. New York: Chapman & Hall.

Citación estilo Chicago

Pollard, Ernest, y Tina J. Yates. Monitoring Butterflies for Ecology and Conservation: The British Butteerfly Monitoring Scheme. New York: Chapman & Hall, 1993.

Cita MLA

Pollard, Ernest, y Tina J. Yates. Monitoring Butterflies for Ecology and Conservation: The British Butteerfly Monitoring Scheme. New York: Chapman & Hall, 1993.