APA (7th ed.) Citation

Feltwell, J. (1986). The natural history of butterflies. Facts on File Publications.

Chicago Style (17th ed.) Citation

Feltwell, John. The Natural History of Butterflies. New York: Facts on File Publications, 1986.

MLA (9th ed.) Citation

Feltwell, John. The Natural History of Butterflies. Facts on File Publications, 1986.

Warning: These citations may not always be 100% accurate.