Jervise, A. 1859. Notices descriptive of the localities of certain Sculptured Stone Monuments in Forfarshire, viz., - Benvie, and Invergowrie; Strathmartin, and Balutheran; Monifieth; Cross of Camus, and Arbirlot. Part III. Proceedings of the Society of Antiquaries of Scotland. 2, (Nov. 1859), 442–452. DOI:https://doi.org/10.9750/PSAS.002.442.452.