Watson, W. (1889) “Notice of the Discovery of Two Cists with Unburnt Burials, one containing an Urn and a Small Bronze Pin, on the Farm of Drummond, Parish of Kiltearn, Ross-shire”, Proceedings of the Society of Antiquaries of Scotland, 23, pp. 138–139. doi: 10.9750/PSAS.023.138.139.