APA (7th ed.) Citation

Williams, G. A. (1985). When was Wales?: A history of the Welsh. Black Raven Press.

Chicago Style (17th ed.) Citation

Williams, Gwyn A. When Was Wales?: A History of the Welsh. London: Black Raven Press, 1985.

MLA (9th ed.) Citation

Williams, Gwyn A. When Was Wales?: A History of the Welsh. Black Raven Press, 1985.