J. Ritchie, J. Crawford, D. A. Lunt, G. Whittington, C. Wickham-Jones, and A. Young, “Recent work on Coll and Skye: (i) Excavations at Sorisdale and Killunaig, Coll; (ii) Notes on prehistoric and later artefacts from Coll; (iii) Beaker pottery from Skye”, PSAS, vol. 109, pp. 75–103, Nov. 1980.