@book{127274,
	author = {Rich, Barnett. and Gutiérrez Díez, Luis.},
	title = {Teoría y problemas de álgebra elemental / },
	publisher = {McGraw-Hill, },
	year = {1969.},
	series = {Serie de compendio Schaum},
	address = {Panamá [etc.] : }
}