APA (7th ed.) Citation

The British Butterfly Society & Pullin, A. S. (1995). Ecology and conservation of butterflies. Chapman & Hall.

Chicago Style (17th ed.) Citation

The British Butterfly Society and A. S. Pullin. Ecology and Conservation of Butterflies. London: Chapman & Hall, 1995.

MLA (9th ed.) Citation

The British Butterfly Society and A. S. Pullin. Ecology and Conservation of Butterflies. Chapman & Hall, 1995.