@book{102599,
	author = {Tugwell, Rexford G. and Padilla, Salvador M.},
	title = {Tugwell's thoughts on planning / },
	publisher = {University of Puerto Rico, },
	year = {1975.},
	address = {[Río Piedras ?] : },
	edition = {1st. ed.},
	note = {Precede al tit.: Graduate School of Planning, University of Puerto Rico.}
}