@book{9482,
	author = {Schraagen, Jan Maarten.},
	title = {Cognitive task analysis /},
	publisher = {L. Erlbaum Associates,},
	year = {2000.},
	series = {Expertise: research and applications},
	address = {Mahwah, N.J. :},
	url = {http://www.loc.gov/catdir/enhancements/fy0634/99042583-d.html}
}