Russell-White, C. J., Ford, B. A., Graham, C. M. M., Hall, D. W., Holmes, N. M., & Stevenson, S. (1996). Medieval features and finds from Balfarg/Balbirnie, Fife. Proceedings of the Society of Antiquaries of Scotland, 125, 1001–1021. https://doi.org/10.9750/PSAS.125.1001.1021