Não informado. (2004). Journal of Tribology. American Society of Mechanical Engineers.
Lua i Stíl Chicago (17ú heag.)Não informado. Journal of Tribology. New York: American Society of Mechanical Engineers, 2004.
Lua MLA (8ú heag.)Não informado. Journal of Tribology. American Society of Mechanical Engineers, 2004.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.