Callander, J. G., Grant, W. G. and Low, A. (1934) “A Long Stalled Chambered Cairn or Mausoleum (Rousay Type) near Midhowe, Rousay, Orkney: With a description of the skeletal remains”, Proceedings of the Society of Antiquaries of Scotland, 68, pp. 320–354. doi: 10.9750/PSAS.068.320.354.