Não informado. (1978). RAILWAY ENGINEER INTERNATIONAL. Mechanical Engineering Publications.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. RAILWAY ENGINEER INTERNATIONAL. London: Mechanical Engineering Publications, 1978.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. RAILWAY ENGINEER INTERNATIONAL. Mechanical Engineering Publications, 1978.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.