Cita APA

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

Citación estilo Chicago

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

Cita MLA

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

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