ROBERTSON, Roger. A Description of an ancient Obelisk in Berwickshire: With an Engraving. Archaeologia Scotica, [S. l.], v. 1, p. 269–272, 1793. Disponível em: https://journals.socantscot.org/index.php/arch-scot/article/view/344. Acesso em: 20 apr. 2024.