APA Citation

Klots, A. (1958). North American butterflies. New York :: Nelson Doubleday,.

Chicago Style Citation

Klots, A. North American Butterflies. New York :: Nelson Doubleday,, 1958.

MLA Citation

Klots, A. North American Butterflies. New York :: Nelson Doubleday,, 1958.

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