Francis, D. (1992). Driving force. Michael Joseph.
Lua i Stíl Chicago (17ú heag.)Francis, Dick. Driving Force. London: Michael Joseph, 1992.
Lua MLA (9ú heag.)Francis, Dick. Driving Force. Michael Joseph, 1992.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.