Craw, John. “An Underground Building at Midhouse, Orkney; Two Urns Found at Lintlaw, Berwickshire; And the Excavation of a Cairn at Drumelzier, Peeblesshire”. Proceedings of the Society of Antiquaries of Scotland 65 (November 30, 1931): 357-372. Accessed December 4, 2022. http://journals.socantscot.org/index.php/psas/article/view/7816.