[1]
Kirkness, W. 1921. Notes on the Discovery of a Coped Monument and an Incised Cross-slab at the Graveyard, St Boniface Church, Papa Westray, Orkney. Proceedings of the Society of Antiquaries of Scotland. 55, (Nov. 1921), 131–134. DOI:https://doi.org/10.9750/PSAS.055.131.134.