Callander, J Graham, and Thomas Bryce. 1914. “Notices of a Short Cist Discovered in the Parish of Yester, East Lothian; of a Prehistoric Burial at Alva, Clackmannanshire; And of an Earth-House in Skye”. Proceedings of the Society of Antiquaries of Scotland 48 (November):194-205. https://doi.org/10.9750/PSAS.048.194.205.