Não informado. (1888). Electrical engineer. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Não informado. Electrical Engineer. New York: McGraw-Hill, 1888.
Lua MLA (8ú heag.)Não informado. Electrical Engineer. McGraw-Hill, 1888.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.