Não informado. (2004). Steam Engineer. John D. Troup.
Lua i Stíl Chicago (17ú heag.)Não informado. Steam Engineer. London: John D. Troup, 2004.
Lua MLA (8ú heag.)Não informado. Steam Engineer. John D. Troup, 2004.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.