Barford, P M. Iron spearhead and javelin from Four Crosses, Llandysilio, Powys. Medieval Archaeology 30 (1986), p. 103-6
Brown, Roger L. Patronage, fees and fixtures : some notes on the history of the parish of Llandysilio. Montgomeryshire Collections 85 (1997), p. 101-4
Owen, Glyn. Pit alignments at Four Crosses, Llandysilio, Powys. Montgomeryshire Collections (Transactions of the Powys-land Club) 77 (1989), p. 27-40 Parish of Llandysilio : memorial inscriptions. [S.l.] : Montgomeryshire Genealogical Society, 1997. 75p
Pryce, Thomas. History of the parish of Llandysilio. Oswestry : Printed by Woodall, Minshall, Thomas and Co., 1899-1902. 244p. Reprinted from the Montgomeryshire Collections, 1899-1902.
Pryce, Thomas. History of the parish of Llandysilio. Collections historical & archaeological relating to Montgomeryshire and its borders Pt 3 Vol 32 1902 Welsh Journals Online & Pt 4 Vol 32 1902 Welsh Journals Online
Warrilow, Walt. Eight ring-ditches at Four Crosses, Llandysilio, Powys, 1981-85. Proceedings of the Prehistoric Society 52 (1986), p. 53-87