Callander, J.G. 1924. A Long Cairn near Gourdon, Kincardineshire, and a Bronze Age Cairn containing a Short Cist and an Urn, at Idvies, Forfarshire. Proceedings of the Society of Antiquaries of Scotland. 58, (Nov. 1924), 23–27. DOI:https://doi.org/10.9750/PSAS.058.23.27.