@book{173522,
	author = {Schmidt, William H. and ebrary, Inc.},
	title = {Characterizing pedagogical flow},
	publisher = {Kluwer Academic Publishers,},
	year = {c1996.},
	address = {Dordrecht ;},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10046981}
}