Sheridan, D. (1972). Upper old red sandstone and Lower Carboniferous of the Slieve Beagh syncline: And its setting in the northwest Carboniferous basin, Ireland. Geological Survey of Ireland.
Dyfyniad Arddull ChicagoSheridan, D. Upper Old Red Sandstone and Lower Carboniferous of the Slieve Beagh Syncline: And Its Setting in the Northwest Carboniferous Basin, Ireland. [Dublin]: Geological Survey of Ireland, 1972.
Dyfyniad MLASheridan, D. Upper Old Red Sandstone and Lower Carboniferous of the Slieve Beagh Syncline: And Its Setting in the Northwest Carboniferous Basin, Ireland. Geological Survey of Ireland, 1972.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.