Kilbride-Jones, H.E. 1935. An Account of the Excavation of the Stone Circle at Loanhead of Daviot, and of the Standing Stones of Cullerlie, Echt, both in Aberdeenshire, on behalf of H.M. Office of Works. Proceedings of the Society of Antiquaries of Scotland. 69, (Nov. 1935), 168–223. DOI:https://doi.org/10.9750/PSAS.069.168.223.