Callander, J.G. 1925. Long Cairns and other Prehistoric Monuments in Aberdeenshire and Banffshire, and a Short cist at Bruceton, Alyth, Perthshire. Proceedings of the Society of Antiquaries of Scotland. 59, (Nov. 1925), 21–28. DOI:https://doi.org/10.9750/PSAS.059.21.28.