The Prehistoric Funerary and Ritual Monument Survey of Glamorgan and Gwent: Overviews July 2003 A report for Cadw by Edith Evans BA PhD MIFA and Richard Lewis BA
GGAT report no. 2003/068 Project no.GGAT 72
GG AT The Glamorgan-Gwent Archaeological Trust Ltd Heathfield House Heathfield Swansea SA1 6EL