@book{28549,
	author = {Villarroel Gallegos, Freddy  and Esquivel Vásquez, Pablo },
	title = {El que no sirve, no sirve : },
	publisher = {[El autor], },
	year = {c2015},
	address = {Santiago de Chile : },
	note = {Bibliografía: p. 163-166}
}