Não informado. (1978). RAILWAY ENGINEER INTERNATIONAL. Mechanical Engineering Publications.
Chicago-viite (17. p.)Não informado. RAILWAY ENGINEER INTERNATIONAL. London: Mechanical Engineering Publications, 1978.
MLA-viite (8. p.)Não informado. RAILWAY ENGINEER INTERNATIONAL. Mechanical Engineering Publications, 1978.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.