Chambers, Robert. “Notice of Comets, Eclipses, Earthquakes, and Other Natural Phenomena, from Old Scottish Chroniclers and Diarists, With Remarks”. Proceedings of the Society of Antiquaries of Scotland 2 (November 30, 1858): 184. Accessed October 2, 2024. https://journals.socantscot.org/index.php/psas/article/view/4416.