@book{199,
	author = {Schunk, Dale H. and Dávila Martínez, José Francisco Javier,},
	title = {Teorías del aprendizaje /},
	publisher = {Pearson Educación,},
	year = {cop. 1997.},
	address = {México [etc.] :},
	edition = {2a. ed.}
}