@book{36728,
	author = {Sófocles.},
	title = {Siete tragedias /},
	publisher = {Editores Mexicanos Unidos  },
	year = {1989a.},
	series = {Sepan cuantos;},
	address = {México },
	edition = {5a ed.},
	note = {Publicada en diferentes reimpresiones.}
}