Grieve, S. 1914. Note upon Carn nan Bharraich, or Cairn of the Men of Barra, a Burial Mound of the Viking Time on the Island of Oronsay, Argyllshire, with an outline of the Political History of the Western Isles during the latter half of the Ninth Century. Proceedings of the Society of Antiquaries of Scotland. 48, (Nov. 1914), 272–291. DOI:https://doi.org/10.9750/PSAS.048.272.291.