Gobius, J. (1485). [Scala coeli] (1st printing.). Johannes de Westfalia.
Lua i Stíl Chicago (17ú heag.)Gobius, Johannes. [Scala Coeli]. 1st printing. Louvain: Johannes de Westfalia, 1485.
Lua MLA (8ú heag.)Gobius, Johannes. [Scala Coeli]. 1st printing. Johannes de Westfalia, 1485.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.