(1977). BMA: Annual Report of Council 1976-7—Appendix II.
Dyfyniad Arddull ChicagoBMA: Annual Report of Council 1976-7—Appendix II. 1977.
Dyfyniad MLABMA: Annual Report of Council 1976-7—Appendix II. 1977.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.