Sutcliff, R. (2000). The eagle of the ninth. Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Sutcliff, Rosemary. The Eagle of the Ninth. New York: Oxford University Press, 2000.
Lua MLA (8ú heag.)Sutcliff, Rosemary. The Eagle of the Ninth. Oxford University Press, 2000.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.