Crawford, John, T Cowie, B Finlayson, A Lane, A Sheridan, and A Braby. “Archaeological Collections from Sandhill Sites in the Isle of Coll, Argyll & Bute”. Proceedings of the Society of Antiquaries of Scotland 127 (November 30, 1998): 467–511. Accessed April 20, 2024. https://journals.socantscot.org/index.php/psas/article/view/9973.