Various. Scientific American Supplement, No. 794, March 21, 1891.
Lua i Stíl Chicago (17ú heag.)Various. Scientific American Supplement, No. 794, March 21, 1891.
Lua MLA (9ú heag.)Various. Scientific American Supplement, No. 794, March 21, 1891.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.