@book{75750,
	author = {Angelo, Thomas A. and Cross, K. Patricia},
	title = {Classroom assessment techniques  a handbook for college teachers},
	publisher = {Jossey-Bass Publishers},
	year = {1993},
	series = {The Jossey-Bass higher and adult education series},
	address = {San Francisco (California, Estados Unidos)},
	edition = {2nd ed.},
	url = {http://www.loc.gov/catdir/toc/onix07/92033901.html}
}