Template:Jones-QNW
Jones, Gwynfor Pierce; Alun John Richards (2004). Cwm Gwyrfai : the quarries of the North Wales Narrow Gauge and the Welsh Highland Railways. Llanrwst, N. Wales: Gwasg Carreg Gwalch. ISBN 0863818978. OCLC 56965267.
Jones, Gwynfor Pierce; Alun John Richards (2004). Cwm Gwyrfai : the quarries of the North Wales Narrow Gauge and the Welsh Highland Railways. Llanrwst, N. Wales: Gwasg Carreg Gwalch. ISBN 0863818978. OCLC 56965267.