@book{4161,
	author = {Charlesworth, Rosalind.},
	title = {Experiences in math for young children /},
	publisher = {Thompson},
	year = {2005},
	address = {New York :},
	edition = {5th ed.},
	note = {Includes bibliographical references},
	url = {http://www.loc.gov/catdir/toc/ecip0417/2004008881.html}
}