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Madog ap Maelgwn's deed of grant to Abbey-Cwmhir Radnorshire Society Transactions Vol 5 1935 Welsh Journals Online
Maddox, W C Abbeycwmhir school; the chronicle of a small rural school Radnorshire Society Transactions vol 49 1979 Welsh Journals Online
Rees, William J . An historical and descriptive account of the ruinated abbey of Cwmhir, in the county of Radnor. London : Pickering, 1850. Reprinted from Archaeologia Cambrensis.
Remfrey, Paul M. A Political History of Abbey Cwmhir and its Patrons, 1176-1282. SCS Publishing, 1994
Tibbott, Gildas An Abbey-Cwmhir relic abroad Radnorshire Society Transactions Vol 5 1935 Welsh Journals Online
Williams, David H . Abbey-Cwmhir. Rev ed. Llandrindod Wells : Powys County Council, 1978. Much of the material appeared originally in: Cistercian Studies by David H. Williams.