Não informado. (1989). Proceedings of the Institution of Mechanical Engineers. Institution of Mechanical Engineers.
Lua i Stíl Chicago (17ú heag.)Não informado. Proceedings of the Institution of Mechanical Engineers. London: Institution of Mechanical Engineers, 1989.
Lua MLA (8ú heag.)Não informado. Proceedings of the Institution of Mechanical Engineers. Institution of Mechanical Engineers, 1989.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.