Não informado. (1986). Civil Engineering Practice. Boston Society of Civil Engineers.
Lua i Stíl Chicago (17ú heag.)Não informado. Civil Engineering Practice. Boston, Mass: Boston Society of Civil Engineers, 1986.
Lua MLA (8ú heag.)Não informado. Civil Engineering Practice. Boston Society of Civil Engineers, 1986.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.