D'Amato, D. Character Recognition Technologies. SPIE Digital Library.
Chicago-čujuhus (17. p.)D'Amato, Donald. Character Recognition Technologies. SPIE Digital Library.
MLA-čujuhus (9. p.)D'Amato, Donald. Character Recognition Technologies. SPIE Digital Library.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.