Não informado. (1953). Railway Track and Structures. Simmons Boardman Publishing.
Chicago-Zitierstil (17. Ausg.)Não informado. Railway Track and Structures. Bristol, Conn: Simmons Boardman Publishing, 1953.
MLA-Zitierstil (8. Ausg.)Não informado. Railway Track and Structures. Simmons Boardman Publishing, 1953.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.