Mellars, P A. “Cnoc Coig, Druim Harstell and Cnoc Riach: Problems of the Identification and Location of Shell Middens on Oronsay”. Proceedings of the Society of Antiquaries of Scotland 111 (November 30, 1982): 516–518. Accessed November 24, 2024. https://journals.socantscot.org/index.php/psas/article/view/9071.