Wilson, G. 1873. Notice of Sculptured Stones at Laggangarn, Mull of Sunnoness, Airrelich and Cassendeoch, Wigtownshire. Proceedings of the Society of Antiquaries of Scotland. 10, (Nov. 1873), 56–61. DOI:https://doi.org/10.9750/PSAS.010.56.61.