CARRADICE, Ian; WALTON ROGERS, P. A group of cache balls from St Andrews. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 132, p. 521–528, 2003. DOI: 10.9750/PSAS.132.521.528. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/9874. Acesso em: 25 apr. 2024.