Ritchie, James. “A Keg of Bog-Butter from Skye and Some Notes Thereupon: (To Be Printed in Next year’s Volume)”. Proceedings of the Society of Antiquaries of Scotland 66 (November 30, 1932): 450. Accessed November 25, 2024. https://journals.socantscot.org/index.php/psas/article/view/7855.