Knight, Matthew G, and Trevor G Cowie. “‘The Spearhead of the Pennon …’: A Bronze Age Spearhead Carried into the Battle of Flodden?”. Proceedings of the Society of Antiquaries of Scotland 148 (November 1, 2019): 49–60. Accessed April 23, 2024. https://journals.socantscot.org/index.php/psas/article/view/10255.