Simpson WD. Notes on Lulach’s Stone, Kildrummy, Aberdeenshire; a Symbol Stone recently found in Mortlach Churchyard, Banffshire; and other Antiquities. PSAS [Internet]. 1926 Nov. 30 [cited 2024 May 1];60:273-80. Available from: https://journals.socantscot.org/index.php/psas/article/view/7676