@book{3554,
	author = {Martin-Gay, Elayn.},
	title = {Developmental mathematics /},
	publisher = {Pearson-Prentice Hall Inc.,},
	year = {c2007.},
	address = {Upper Saddle River, New Jersey :},
	note = {Includes index.},
	url = {http://www.gbv.de/dms/bowker/toc/9780132290906.pdf}
}