BOLTON, W. (1968). Electricity.: BOLTON, W. Pergamon Press.
Lua i Stíl Chicago (17ú heag.)BOLTON, W. Electricity.: BOLTON, W. London: Pergamon Press, 1968.
Lua MLA (9ú heag.)BOLTON, W. Electricity.: BOLTON, W. Pergamon Press, 1968.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.