Smith, R. A. (1872). Descriptive List of Antiquities near Loch Etive, Argyllshire, consisting of Vitrified Forts, Cairns, Circles, Crannogs, &c.; with some Remarks on the Growth of Peat. Proceedings of the Society of Antiquaries of Scotland, 9, 81–106. https://doi.org/10.9750/PSAS.009.81.106