Não informado. (2018). Progress in Non-Destructive Testing. Heywood.
Lua i Stíl Chicago (17ú heag.)Não informado. Progress in Non-Destructive Testing. London: Heywood, 2018.
Lua MLA (8ú heag.)Não informado. Progress in Non-Destructive Testing. Heywood, 2018.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.