Lilly, W. E. (1915). Tests on various steels with an improved torsion testing machine.
Lua i Stíl Chicago (17ú heag.)Lilly, W. E. Tests on Various Steels with an Improved Torsion Testing Machine. 1915.
Lua MLA (9ú heag.)Lilly, W. E. Tests on Various Steels with an Improved Torsion Testing Machine. 1915.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
