Kilbride-Jones, H.E. 1935. An Aberdeenshire Iron Age Miscellany: (1) Stone Circle at Foularton; (2) Bronze Terret from Rhynie, and Distribution of the Type. Proceedings of the Society of Antiquaries of Scotland. 69, (Nov. 1935), 445–454. DOI:https://doi.org/10.9750/PSAS.069.445.454.