Sturrock, J. (1880). Notice of a Jet Necklace and Urn of the Food-Vessel Type, found in a Cist at Balcalk, Tealing, and of the opening of Hatton Cairn, Parish of Inverarity, Forfarshire. Proceedings of the Society of Antiquaries of Scotland, 14, 260-267. https://doi.org/10.9750/PSAS.014.260.267