Não informado. (1973). World construction. Technical Publishing Corporation.
Lua i Stíl Chicago (17ú heag.)Não informado. World Construction. New York: Technical Publishing Corporation, 1973.
Lua MLA (8ú heag.)Não informado. World Construction. Technical Publishing Corporation, 1973.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.