@book{88100,
	author = {Pyle, Robert Michael. and National Audubon Society.},
	title = {The Audubon Society field guide to North American butterflies /},
	publisher = {Knopf :},
	year = {c1981.},
	address = {New York :},
	edition = {A Chanticleer Press ed.},
	note = {Includes indexes.},
	url = {http://www.loc.gov/catdir/enhancements/fy0601/80084240-d.html}
}