Petersen, F., Shepherd, I. A. G., Tuckwell, A. N., Young, A., & Denston, C. B. (1975). A short cist at Horsbrugh Castle Farm, Peeblesshire. Proceedings of the Society of Antiquaries of Scotland, 105, 43–62. https://doi.org/10.9750/PSAS.105.43.62