Não informado. (1959). Journal of Mechanical Engineering Science. Institution of Mechanical Engineers.
Lua i Stíl Chicago (17ú heag.)Não informado. Journal of Mechanical Engineering Science. London: Institution of Mechanical Engineers, 1959.
Lua MLA (8ú heag.)Não informado. Journal of Mechanical Engineering Science. Institution of Mechanical Engineers, 1959.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.