Hutcheson, Alexander. “Notice of the Discovery and Examination of a Burial Cairn of the Bronze Age at the Farm of Gilchorn, Near Arbroath”. Proceedings of the Society of Antiquaries of Scotland 25 (November 30, 1891): 447–463. Accessed May 7, 2024. https://journals.socantscot.org/index.php/psas/article/view/6414.