Britnell, W., & Whittle, A. W. R. (2021). The first stones: Penywyrlod, Gwernvale and the black mountains neolithic long cairns of south-east Wales. Oxbow Books.
Chicago Style (17th ed.) CitationBritnell, William, and A. W. R. Whittle. The First Stones: Penywyrlod, Gwernvale and the Black Mountains Neolithic Long Cairns of South-east Wales. Oxford: Oxbow Books, 2021.
MLA (9th ed.) CitationBritnell, William, and A. W. R. Whittle. The First Stones: Penywyrlod, Gwernvale and the Black Mountains Neolithic Long Cairns of South-east Wales. Oxbow Books, 2021.
Warning: These citations may not always be 100% accurate.