Nowell, D., & Hills, D. (1990). CRACK INITIATION CRITERIA IN FRETTING FATIGUE.
Lua i Stíl Chicago (17ú heag.)Nowell, D., agus D. Hills. CRACK INITIATION CRITERIA IN FRETTING FATIGUE. 1990.
Lua MLA (9ú heag.)Nowell, D., agus D. Hills. CRACK INITIATION CRITERIA IN FRETTING FATIGUE. 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.