Lang, K. R. A companion to astronomy and astrophysics: Chronology and glossary with data tables.
Lua i Stíl Chicago (17ú heag.)Lang, Kenneth R. A Companion to Astronomy and Astrophysics: Chronology and Glossary with Data Tables.
Lua MLA (8ú heag.)Lang, Kenneth R. A Companion to Astronomy and Astrophysics: Chronology and Glossary with Data Tables.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.