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. Retrieved from http://journals.socantscot.org/index.php/psas/article/view/5923