Eeles, Francis C. “Undescribed Sculptured Stones and Crosses at Old Luce, Farnell, Edzell, Lochlee, and Kirkmichael (Banffshire), With Some Late Mediaeval Monuments at Parton (Kirkcudbrightshire), Maryton, and Wick”. Proceedings of the Society of Antiquaries of Scotland, vol. 44, Nov. 1910, pp. 354-72, doi:10.9750/PSAS.044.354.372.