Holden, T., Boardman, S., McNeill, T., Brann, M., Walker, B., & Morrison, J. (2017). Kisimul, Isle of Barra. Part 1: The Castle and the MacNeills. Proceedings of the Society of Antiquaries of Scotland, 146, 181–213. https://doi.org/10.9750/PSAS.146.1219