Thurlby, Malcolm (1988). "The Romanesque Priory Church of St. Michael at Ewenny". Journal of the Society of Architectural Historians. 47 (3): 281–294. doi:10.2307/990302. JSTOR990302.
Malden, H. E. (1911). "The Possession of Cardigan Priory by Chertsey Abbey: A Study in Some Mediæval Forgeries". Transactions of the Royal Historical Society. 5: 141–156. doi:10.2307/3678364. JSTOR3678364. S2CID192009511.
Hughes, R. Elfyn; Dale, J.; Williams, I. Ellis; Rees, D. I. (1973). "Studies in Sheep Population and Environment in the Mountains of North-West Wales I. The Status of the Sheep in the Mountains of North Wales Since Mediaeval Times". Journal of Applied Ecology. 10 (1): 113–132. doi:10.2307/2404720. JSTOR2404720.
Locock, Martin (1998). "The Goldcliff Stone and Roman Drainage on the Caldicot Level: An Evaluation at Hill Farm, Goldcliff, 1996". Britannia. 29: 329–336. doi:10.2307/526827. JSTOR526827. S2CID162801433.
Thurlby, Malcolm (1988). "The Romanesque Priory Church of St. Michael at Ewenny". Journal of the Society of Architectural Historians. 47 (3): 281–294. doi:10.2307/990302. JSTOR990302.
Malden, H. E. (1911). "The Possession of Cardigan Priory by Chertsey Abbey: A Study in Some Mediæval Forgeries". Transactions of the Royal Historical Society. 5: 141–156. doi:10.2307/3678364. JSTOR3678364. S2CID192009511.
Hughes, R. Elfyn; Dale, J.; Williams, I. Ellis; Rees, D. I. (1973). "Studies in Sheep Population and Environment in the Mountains of North-West Wales I. The Status of the Sheep in the Mountains of North Wales Since Mediaeval Times". Journal of Applied Ecology. 10 (1): 113–132. doi:10.2307/2404720. JSTOR2404720.
Locock, Martin (1998). "The Goldcliff Stone and Roman Drainage on the Caldicot Level: An Evaluation at Hill Farm, Goldcliff, 1996". Britannia. 29: 329–336. doi:10.2307/526827. JSTOR526827. S2CID162801433.
Malden, H. E. (1911). "The Possession of Cardigan Priory by Chertsey Abbey: A Study in Some Mediæval Forgeries". Transactions of the Royal Historical Society. 5: 141–156. doi:10.2307/3678364. JSTOR3678364. S2CID192009511.
Locock, Martin (1998). "The Goldcliff Stone and Roman Drainage on the Caldicot Level: An Evaluation at Hill Farm, Goldcliff, 1996". Britannia. 29: 329–336. doi:10.2307/526827. JSTOR526827. S2CID162801433.
