Edmondston, Thomas. “Notes of Some Recent Excavations in the Island of Unst, Shetland, and of the Collection of Stone Vessels, Implements, &C., Thus Obtained for the Society’s Museum”. Proceedings of the Society of Antiquaries of Scotland 9 (November 30, 1872): 283-287. Accessed March 28, 2024. http://journals.socantscot.org/index.php/psas/article/view/5485.