D'Amato, D. Character Recognition Technologies. SPIE Digital Library.
Chicago Style (17th ed.) ZitazioaD'Amato, Donald. Character Recognition Technologies. SPIE Digital Library.
MLA (9th ed.) ZitazioaD'Amato, Donald. Character Recognition Technologies. SPIE Digital Library.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.