Lua APA (7ú heag.)
Doyle, A. C. The Sign of the Four.
Lua i Stíl Chicago (17ú heag.)Doyle, A. C. The Sign of the Four.
Lua MLA (8ú heag.)Doyle, A. C. The Sign of the Four.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.