Template:Roberts-TFA
Roberts, Pamela; John Shackell (1999). The Ffestiniog Adventure. Llanwrst: Gwasg Carreg Gwalch. ISBN 0863815480. OCLC 59442920.
Roberts, Pamela; John Shackell (1999). The Ffestiniog Adventure. Llanwrst: Gwasg Carreg Gwalch. ISBN 0863815480. OCLC 59442920.