Dyfyniad APA

FELTWELL, J. (1986). The natural history of butterflies. Facts on file pub.

Dyfyniad Arddull Chicago

FELTWELL, John. The Natural History of Butterflies. New York: Facts on file pub, 1986.

Dyfyniad MLA

FELTWELL, John. The Natural History of Butterflies. Facts on file pub, 1986.

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