@book{16711,
	author = {Gardella, Francis J.},
	title = {Introducing difficult mathematics topics in the elementary classroom},
	publisher = {Routledge,},
	year = {2009},
	address = {New York :},
	note = {Description based on print version record},
	url = {http://www.netlibrary.com.libraryumpsa.idm.oclc.org/urlapi.asp?action=summary&v=1&bookid=234469}
}