Barclay, G., Andrews, M.V., Blackham, A.M., Gilbertson, D., Lee, J.A., van der Veen, M., Rideout, J.S. and Townshend, A. 1987. Excavations at Upper Suisgill, Sutherland. Proceedings of the Society of Antiquaries of Scotland. 115, (Nov. 1987), 159-198. DOI:https://doi.org/10.9750/PSAS.115.159.198.