Não informado. (1958). Trends: German constructional engineering for export. Elsner.
Lua i Stíl Chicago (17ú heag.)Não informado. Trends: German Constructional Engineering for Export. Darmstadt, Alemanha: Elsner, 1958.
Lua MLA (8ú heag.)Não informado. Trends: German Constructional Engineering for Export. Elsner, 1958.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.