@book{7026,
	author = { Castells, Manuel, and Oliván, Irene C., },
	title = {La cuestión urbana / },
	publisher = {Siglo veintiuno, },
	year = {1980},
	series = {Arquitectura y urbanismo},
	address = {Bogotá : },
	edition = {Séptima edición }
}