Callander, J, James Cree, and James Ritchie. “Preliminary Report on Caves Containing Palaeolithic Relics, Near Inchnadamph, Sutherland”. Proceedings of the Society of Antiquaries of Scotland 61 (November 30, 1927): 169-172. Accessed March 29, 2024. http://soas.is.ed.ac.uk/index.php/psas/article/view/7697.