Stewart, W.B. and Dawkins, W.B. 1914. Notes on a Further Excavation of Ancient Dwellings at Skara, in the Parish of Sandwick, Orkney, made during August 1913: With Notes on the Remains found. Proceedings of the Society of Antiquaries of Scotland. 48, (Nov. 1914), 344–355. DOI:https://doi.org/10.9750/PSAS.048.344.355.