Cita APA (7a ed.)

Williams, G. A. (1982). The Welsh in their history. Helm.

Cita Chicago Style (17a ed.)

Williams, Gwyn A. The Welsh in Their History. London [etc.]: Helm, 1982.

Cita MLA (9a ed.)

Williams, Gwyn A. The Welsh in Their History. Helm, 1982.