RITCHIE, J N Graham; ADAMSON, H C; HENSHALL, Audrey S; KENWORTHY, J B; LUNT, Dorothy A; MACLAREN, A; WICKHAM-JONES, Caroline R; YOUNG, A. Knappers, Dunbartonshire: a reassessment. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 111, p. 172–204, 1982. DOI: 10.9750/PSAS.111.172.204. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/9057. Acesso em: 24 apr. 2024.