Forbes, C. (1989). The Greek key. Pan Books.
Lua i Stíl Chicago (17ú heag.)Forbes, Colin. The Greek Key. New York: Pan Books, 1989.
Lua MLA (8ú heag.)Forbes, Colin. The Greek Key. Pan Books, 1989.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.