Não informado. (1967). Non-Destructive Testing. Iliffe Science and Technology Publications.
Lua i Stíl Chicago (17ú heag.)Não informado. Non-Destructive Testing. Guildford, Inglaterra: Iliffe Science and Technology Publications, 1967.
Lua MLA (8ú heag.)Não informado. Non-Destructive Testing. Iliffe Science and Technology Publications, 1967.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.