Pellant, C. Rocks and minerals (2a ed.).
Lua i Stíl Chicago (17ú heag.)Pellant, Chris. Rocks and Minerals. 2a ed.
Lua MLA (8ú heag.)Pellant, Chris. Rocks and Minerals. 2a ed.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.