@book{1841,
	author = {Schultz-Ferrell, Karren. and Weiskopf, Cathy.},
	title = {Estimating and measuring /},
	publisher = {Barron's ;},
	year = {2008.},
	series = {Adventures in mathopolis},
	address = {New York :},
	url = {http://www.loc.gov/catdir/toc/ecip0815/2008014256.html}
}