Stewart, C. (1998). Cassian the monk. Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Stewart, Columba. Cassian the Monk. New York: Oxford University Press, 1998.
Lua MLA (9ú heag.)Stewart, Columba. Cassian the Monk. Oxford University Press, 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.