Bryce, Thomas, and Alexander Low. “Notes (I) on a Human Skeleton Found in a Cist With a Beaker Urn at Acharole, West Watten, Caithness; And (II) on the Cranial Form Associated With That Type of Ceramic”. Proceedings of the Society of Antiquaries of Scotland 39 (November 30, 1905): 418-438. Accessed June 10, 2023. http://journals.socantscot.org/index.php/psas/article/view/6957.