Oliver, F S, and J Graham Callander. “The Excavation of Two Cairns on the Knock Hills, Edgerston, Roxburghshire: With a Report on the Relics Found”. Proceedings of the Society of Antiquaries of Scotland 63 (November 30, 1929): 372–377. Accessed April 30, 2024. https://journals.socantscot.org/index.php/psas/article/view/7765.