Grant, Walter G, David Wilson, and V Gordon Childe. “The Knowe of Lairo, Rousay, Orkney: With a Note on the Relics”. Proceedings of the Society of Antiquaries of Scotland 77 (November 30, 1943): 17–26. Accessed November 22, 2024. https://journals.socantscot.org/index.php/psas/article/view/8193.