@book {11109,
	title = {An American Idea: The Making of the National Parks},
	year = {2009},
	note = {Illustrations},
	pages = {191},
	publisher = {National Geographic},
	organization = {National Geographic},
	address = {Washington D.C.},
	keywords = {History, Park development},
	author = {Heacox, Kim and Carter, Jimmy}
}
