Thomas, H. Thomas Alva Edison.
Lua i Stíl Chicago (17ú heag.)Thomas, Henry. Thomas Alva Edison.
Lua MLA (8ú heag.)Thomas, Henry. Thomas Alva Edison.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
Lua APA (7ú heag.)