Clifford, W. (1984). Law and order in Papua New Guinea. Institute of National Affairs.
Dyfyniad Arddull ChicagoClifford, William. Law and Order in Papua New Guinea. Papua New Guinea: Institute of National Affairs, 1984.
Dyfyniad MLAClifford, William. Law and Order in Papua New Guinea. Institute of National Affairs, 1984.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.