Não informado. (2004). American Engineer: The railway mechanical monthly. Simmons Boardman Publishing.
Lua i Stíl Chicago (17ú heag.)Não informado. American Engineer: The Railway Mechanical Monthly. New York: Simmons Boardman Publishing, 2004.
Lua MLA (8ú heag.)Não informado. American Engineer: The Railway Mechanical Monthly. Simmons Boardman Publishing, 2004.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.