Greig, M. K.; Greig, C.; Shepherd, A. N.; Shepherd, I. A. G. A Beaker Cist at Chapelden, Tore of Troup, Aberdour, Banff and Buchan District, With a Note on the Orientation of Beaker Burials in North-East Scotland. PSAS 1990, 119, 73-81.