Cameron, K., S. Mitchell, M. Johnson, D. Alexander, B. Finlayson, R. McCulloch, T. Ballin, S. Anderson, M. Cressey, C. Ellis, and A. Dunwell. “Castlesteads and Langside Pit Alignments”. Scottish Archaeological Internet Reports, Vol. 44, Jan. 2010, pp. 8-28, http://journals.socantscot.org/index.php/sair/article/view/2847.