Wilson, George. “Notice of Sculptured Stones at Laggangarn, Mull of Sunnoness, Airrelich and Cassendeoch, Wigtownshire”. Proceedings of the Society of Antiquaries of Scotland 10 (November 30, 1873): 56–61. Accessed April 26, 2024. https://journals.socantscot.org/index.php/psas/article/view/5651.