@book{8502,
	author = {Hernández Sampieri, Roberto and Toledo Castellanos, Miguel Angel, director.},
	title = {Metodología de la investigación /},
	publisher = {McGraw Hill Interamericana, },
	year = {2014},
	address = {México, D. F., México :},
	edition = {Sexta edición},
	note = {Incluye índice.}
}