Railway Age. Simmons Boardman Publishing Corp.
Chicago-čujuhus (17. p.)Railway Age. Simmons Boardman Publishing Corp.
MLA-čujuhus (9. p.)Railway Age. Simmons Boardman Publishing Corp.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.