Als, G. (1991). Histoire quantitative du Luxembourg 1839-1990.
Lua i Stíl Chicago (17ú heag.)Als, Georges. Histoire Quantitative Du Luxembourg 1839-1990. Luxembourg, 1991.
Lua MLA (8ú heag.)Als, Georges. Histoire Quantitative Du Luxembourg 1839-1990. 1991.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.