F. T. Macleod, J. T. Ritchie, and C. V. Baillet de Latour, “Notes on Dun an Iardhard, a Broch near Dunvegan, excavated by Countess Vincent Baillet de Latour, Uiginish Lodge, Skye”, PSAS, vol. 49, pp. 57–70, Nov. 1915.