Restatement of the law. Volume.7 , 1936. American Law Institute Publishers.
Dyfyniad Arddull ChicagoRestatement of the Law. Volume.7 , 1936. St.Paul: American Law Institute Publishers.
Dyfyniad MLARestatement of the Law. Volume.7 , 1936. American Law Institute Publishers.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.