APA (7th ed.) Citation

Feltwell, J. (1993). The encyclopedia of butterflies. Prentice Hall General Reference.

Chicago Style (17th ed.) Citation

Feltwell, John. The Encyclopedia of Butterflies. New York: Prentice Hall General Reference, 1993.

MLA (9th ed.) Citation

Feltwell, John. The Encyclopedia of Butterflies. Prentice Hall General Reference, 1993.

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