@book{170562,
	author = {Johnson, Nelson and Bienvenido Barcena, José Fernando, tr. },
	title = {Autocad : manual de referencia  /},
	publisher = { McGraw-Hill,},
	year = {1992},
	address = {México  :},
	edition = {2a ed.},
	note = {Título original: Autocad. The Complete Reference.}
}