Murray, Hillary K, J C Murray, A N Shepherd, and I A G Shepherd. “Evidence of Agricultural Activity of the Late Second Millennium BC at Rattray, Aberdeenshire”. Proceedings of the Society of Antiquaries of Scotland 122 (November 30, 1993): 113–125. Accessed November 22, 2024. https://journals.socantscot.org/index.php/psas/article/view/9430.