CULVER,Roger B. Astronomy#Roger B Culver. Barnes & Noble Books.
Lua i Stíl Chicago (17ú heag.)CULVER,Roger B. Astronomy#Roger B Culver. Barnes & Noble Books.
Lua MLA (8ú heag.)CULVER,Roger B. Astronomy#Roger B Culver. Barnes & Noble Books.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.