Não informado. (1969). Highways & Traffic Engineering. IPC Building and Contract Journals.
Lua i Stíl Chicago (17ú heag.)Não informado. Highways & Traffic Engineering. London: IPC Building and Contract Journals, 1969.
Lua MLA (8ú heag.)Não informado. Highways & Traffic Engineering. IPC Building and Contract Journals, 1969.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.