Siegel, S. A. (1960). The law of open space: Legal aspects of acquiring or otherwise preserving open space in the tri-state New York metropolitan region. Regional Plan Association.
Dyfyniad Arddull ChicagoSiegel, Shirley Adelson. The Law of Open Space: Legal Aspects of Acquiring or Otherwise Preserving Open Space in the Tri-state New York Metropolitan Region. New York: Regional Plan Association, 1960.
Dyfyniad MLASiegel, Shirley Adelson. The Law of Open Space: Legal Aspects of Acquiring or Otherwise Preserving Open Space in the Tri-state New York Metropolitan Region. Regional Plan Association, 1960.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.