(1)
Proudfoot, E.; Aliaga-Kelly, C.; Bateson, J. D.; Caldwell, D.; Ellis, B.; Hurst, J. W. G.; Haggarty, G.; Murdoch, K. R.; McCormick, F.; Pegler, T. C. Excavations at Niddry Castle, West Lothian, 1986-90. PSAS 1998, 127, 783-842.