DRYDEN, Henry. Notes of the Brochs or Pictish Towers of Mousa, Clickemin, &c., in Shetland, illustrative of part of the Series of Plans and Sections deposited in the Library of the Society. Archaeologia Scotica, [S. l.], v. 5, p. 199–212, 1891. Disponível em: https://journals.socantscot.org/index.php/arch-scot/article/view/316. Acesso em: 25 jul. 2024.