Callander, J. (1927) “A Symbol Stone from Fiscavaig, Skye; an Early Iron Age Hoard from Crichie, Aberdeenshire; and Cinerary Urns from Seamill, West Kilbride, Ayrshire”, Proceedings of the Society of Antiquaries of Scotland, 61, pp. 241-251. doi: 10.9750/PSAS.061.241.251.