SCHIØLER, Poul et al. Lithostratigraphy: Westray Group, the Lark Formation. GEUS Bulletin, Copenhagen, Denmark, v. 12, p. 63–73, 2007. DOI: 10.34194/geusb.v12.4937. Disponível em: https://geusbulletin.org/index.php/geusb/article/view/4937. Acesso em: 4 nov. 2025.