Coles, F.R. 1901. Report on the Stone Circles of the North-East of Scotland, Inverurie District, obtained under the Gunning Fellowship, with Measured Plans and Drawings. Proceedings of the Society of Antiquaries of Scotland. 35, (Nov. 1901), 187–248. DOI:https://doi.org/10.9750/PSAS.035.187.248.