@book{50791,
	author = {Schjetnan Garduño, Mario, and Calvillo Unna, Jorge,},
	title = {Principios de diseño urbano/ambiental /},
	publisher = {Limusa,},
	year = {2008.},
	address = {México :},
	edition = {2a},
	note = {Texto en tres columnas.}
}