Calder, Charles S T, and J R C Hamilton. “Report on the Partial Excavation of a Broch at Sae Breck, Esha Ness, in the Parish of Northmaven, Shetland: With a Report on the Pottery”. Proceedings of the Society of Antiquaries of Scotland, vol. 86, Nov. 1954, pp. 178-86, doi:10.9750/PSAS.086.178.186.