@book{3216,
	author = {Barnett, Raymond A. and Diego Edmundo Barahona Peña},
	title = {Algebra y trigonometria  /},
	publisher = {McGraw Hill, },
	year = {1989},
	address = {México  },
	edition = {2a ed.},
	note = {Incluye índice y apendices}
}