Não informado. (1973). Design Engineering. Morgan Grampian.
Lua i Stíl Chicago (17ú heag.)Não informado. Design Engineering. London: Morgan Grampian, 1973.
Lua MLA (8ú heag.)Não informado. Design Engineering. Morgan Grampian, 1973.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.