Carver, Martin, and Cecily Spall. 2005. “Excavating a Parchmenerie : Archaeological Correlates of Making Parchment at the Pictish Monastery at Portmahomack, Easter Ross”. Proceedings of the Society of Antiquaries of Scotland 134 (November):183-200. https://doi.org/10.9750/PSAS.134.183.200.