@book{1517,
	author = {Hernández Sampieri, Roberto. and Fernández Collado, C.},
	title = {Metodología de la investigación.},
	publisher = {McGraw-Hill, },
	year = {c1998},
	address = {México : },
	edition = {2a. ed.},
	note = {Incluye diskette y aplicaciones interdisciplinarias}
}