Evans, C. R. (1968). Cybernetics. Butterworths.
Lua i Stíl Chicago (17ú heag.)Evans, Christopher Riche. Cybernetics. London: Butterworths, 1968.
Lua MLA (9ú heag.)Evans, Christopher Riche. Cybernetics. Butterworths, 1968.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.