Ogston, Alexander. “Notice of Cists and Urns Recently Found at Ardoe, Near Aberdeen. In a Letter to John Stuart, LL.D., Sec”. Proceedings of the Society of Antiquaries of Scotland 9 (November 30, 1871): 269–271. Accessed April 29, 2024. https://journals.socantscot.org/index.php/psas/article/view/5482.