Adam Hibbert. (2006). Mighty Machines (Q & A Reference). Parragon Plus.
Lua i Stíl Chicago (17ú heag.)Adam Hibbert. Mighty Machines (Q & A Reference). Parragon Plus, 2006.
Lua MLA (9ú heag.)Adam Hibbert. Mighty Machines (Q & A Reference). Parragon Plus, 2006.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.