Callander, J Graham. “Discovery of (1) a Short Cist Containing Human Remains and a Bronze Armlet, and (2) a Cup-Marked Stone, at Williamston, St Martins, Perthshire”. Proceedings of the Society of Antiquaries of Scotland 53 (November 30, 1919): 15–24. Accessed November 22, 2024. https://journals.socantscot.org/index.php/psas/article/view/7453.