@book{4272,
	author = {Van Brummelen, Harro W.},
	title = {Steppingstones to curriculum :},
	publisher = {Purposeful Design Publications,},
	year = {c2002.},
	address = {Colorado Springs, Colo. :},
	edition = {2nd ed.},
	url = {http://catdir.loc.gov/catdir/toc/fy0612/2005298283.html}
}