Holden, Timothy, Stephen Boardman, Thomas McNeill, Martin Brann, Bruce Walker, and Jenni Morrison. “Kisimul, Isle of Barra. Part 1: The Castle and the MacNeills”. Proceedings of the Society of Antiquaries of Scotland 146 (November 30, 2017): 181-213. Accessed March 28, 2024. http://journals.socantscot.org/index.php/psas/article/view/9850.