BARCLAY, Gordon J. The cultivation remains beneath the North Mains, Strathallan barrow. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 119, p. 59–61, 1990. DOI: 10.9750/PSAS.119.59.61. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/9351. Acesso em: 5 may. 2024.