@book{8497,
	author = {Hernández Sampieri, Roberto. and Fernández Collado, Carlos.},
	title = {Metodología de la Investigación /},
	publisher = {McGraw Hill Interamericana,},
	year = {2014.},
	address = {México :},
	edition = {6a ed.},
	note = {Incluye índice.}
}