@book{216298,
	author = {Dunn, Jon and National Geographic Society U.S.},
	title = {National Geographic field guide to the birds of North America},
	publisher = {National Geographic},
	year = {c2006.},
	address = {Washington, D.C.},
	edition = {5th ed.},
	note = {Rev. ed. of: Field guide to the birds of North America. 4th ed., Fully rev. & updated. 2002.},
	url = {http://www.loc.gov/catdir/toc/fy0708/2006049420.html}
}