Não informado. (1953). Railway Track and Structures. Simmons Boardman Publishing.
Cita Chicago Style (17a ed.)Não informado. Railway Track and Structures. Bristol, Conn: Simmons Boardman Publishing, 1953.
Cita MLA (8a ed.)Não informado. Railway Track and Structures. Simmons Boardman Publishing, 1953.
Precaución: Estas citas no son 100% exactas.