Joass, J. M. and Aitken, T. (1891) “The Brochs or Pictish Towers of Cinn-Trolla, Carn-Liath, and Craig-Carril, in Sutherland, with Notes on other Northern Brochs. With Report upon the Crania found in and about them”, Archaeologia Scotica, 5, pp. 95-130. Available at: http://journals.socantscot.org/index.php/arch-scot/article/view/314 (Accessed: 21February2020).