SLADE, H Gordon; WATSON, George. St Peter’s Kirk, Thurso, Caithness c 1150-1832. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 119, p. 297–325, 1990. DOI: 10.9750/PSAS.119.297.325. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/9367. Acesso em: 19 apr. 2024.