@book{79709,
	author = {Hernandez León, Rolando Alfredo. and Coello González, Zayda,},
	title = {El paradigma cuantitativo de la investigación científica /},
	publisher = {Editorial Universitaria,},
	year = {2008.},
	address = {La Habana :},
	note = {Contiene índice.},
	url = {https://elibro.net/ereader/politecnicointernacional/71307}
}