Property Rights Alliance. (2011). International property rights intex 2011 report. Liberty Institute.
Dyfyniad Arddull ChicagoProperty Rights Alliance. International Property Rights Intex 2011 Report. New Delhi: Liberty Institute, 2011.
Dyfyniad MLAProperty Rights Alliance. International Property Rights Intex 2011 Report. Liberty Institute, 2011.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.