@book{34232,
	author = {Hernández Sampieri, Roberto and Fernández Collado, Carlos},
	title = {Metodología de la investigación /},
	publisher = {McGraw-Hill/Interamericana},
	year = {2006.},
	address = {México :},
	edition = {4a ed.},
	note = {Incluye bibliografía (p. 809-830) e índices.}
}