Não informado. (2004). Civil engineering systems. Butterworth Scientific.
Lua i Stíl Chicago (17ú heag.)Não informado. Civil Engineering Systems. Guildford, Inglaterra: Butterworth Scientific, 2004.
Lua MLA (8ú heag.)Não informado. Civil Engineering Systems. Butterworth Scientific, 2004.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.