Não informado. (1937). Engineering and Contract Record. Southam Business Publications.
Lua i Stíl Chicago (17ú heag.)Não informado. Engineering and Contract Record. Toronto, Canada: Southam Business Publications, 1937.
Lua MLA (8ú heag.)Não informado. Engineering and Contract Record. Southam Business Publications, 1937.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.