@book{4852,
	author = {Angel, Allen R. and Palmas Velasco, Oscar A., },
	title = {Algebra intermedia / },
	publisher = {Prentice Hall Hispanoamericana, },
	year = {1997.},
	address = {México ; Bogotá : },
	edition = {4a. ed. / },
	note = {Incluye índice.}
}