Institution of Civil Engineers (Great Britain). (1967). Developments in railway traffic engineering: Proceedings of a symposium held May 1967. The Institution.
Lua i Stíl Chicago (17ú heag.)Institution of Civil Engineers (Great Britain). Developments in Railway Traffic Engineering: Proceedings of a Symposium Held May 1967. London : The Institution,: The Institution, 1967.
Lua MLA (8ú heag.)Institution of Civil Engineers (Great Britain). Developments in Railway Traffic Engineering: Proceedings of a Symposium Held May 1967. The Institution, 1967.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.