@book{15183,
	author = {Hestenes, Roberta. and Hendricks, Howard G.},
	title = {Mastering teaching /},
	publisher = {Multnomah Press ;},
	year = {c1991.},
	address = {Portland, Or. :},
	note = {Series statement from jacket.},
	url = {http://www.loc.gov/catdir/enhancements/fy0609/91008435-d.html}
}