Index to Legal periodicals,Vol.77, No.1, 1983. The H.W Wilson company.
Dyfyniad Arddull ChicagoIndex to Legal Periodicals,Vol.77, No.1, 1983. New York: The H.W Wilson company.
Dyfyniad MLAIndex to Legal Periodicals,Vol.77, No.1, 1983. The H.W Wilson company.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.