Liddle, R. A treatise on the world.
Lua i Stíl Chicago (17ú heag.)Liddle, Robert. A Treatise on the World.
Lua MLA (9ú heag.)Liddle, Robert. A Treatise on the World.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
Lua APA (7ú heag.)