Sharp, M. (1986). <Os >robôs. Valor.
Lua i Stíl Chicago (17ú heag.)Sharp, Mike. <Os >robôs. Valor, 1986.
Lua MLA (8ú heag.)Sharp, Mike. <Os >robôs. Valor, 1986.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
Lua APA (7ú heag.)