@book{48579,
	author = {Tocci, Ronald J., and Widmer, Neal S.},
	title = {Sistemas digitales :},
	publisher = {Pearson Educación,},
	year = {[1996]},
	address = {México :},
	edition = {Sexta edición [en inglés], },
	note = {Traducción de: Digital systems: principles and applications.}
}