Ritchie, J N Graham, Juliet Clutton-Brock, C A Dickson, Mary Harman, Audrey S Henshall, Dorothy A Lunt, and A Wheeler. “Excavations at Machrins, Colonsay”. Proceedings of the Society of Antiquaries of Scotland 111 (November 30, 1982): 263–281. Accessed October 13, 2024. https://journals.socantscot.org/index.php/psas/article/view/9061.