Clark, C. (1926). The flag of England, its history and the flags of the Empire: By Cumberland Clark, F.Z.S., F.R.A.S. Wass, Pritchard & Co..
Lua i Stíl Chicago (17ú heag.)Clark, Cumberland. The Flag of England, Its History and the Flags of the Empire: By Cumberland Clark, F.Z.S., F.R.A.S. London: Wass, Pritchard & Co., 1926.
Lua MLA (8ú heag.)Clark, Cumberland. The Flag of England, Its History and the Flags of the Empire: By Cumberland Clark, F.Z.S., F.R.A.S. Wass, Pritchard & Co., 1926.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.