Anderson, J. (1871) “Notes on the Excavation of ’Kenny’s Cairn,’ on the Hill of Bruan; Carn Righ, year Yarhouse; the Warth Hill Cairn, Duncansbay; and several smaller Sepulchral Cairns in Caithness”, Proceedings of the Society of Antiquaries of Scotland, 9, pp. 292–296. doi: 10.9750/PSAS.009.292.296.