@book{1178,
	author = {Hernández Sampieri, Roberto  and Fernández Collado, Carlos.},
	title = {Metodología de la investigación / },
	publisher = {McGraw-Hill Interamericana, },
	year = {2010},
	address = {México : 	},
	edition = {5.edición.},
	url = {https://www.esup.edu.pe/descargas/dep_investigacion/Metodologia%20de%20la%20investigaci%C3%B3n%205ta%20Edici%C3%B3n.pdf}
}