El-Hakim, S. Industrial Vision Metrology. SPIE Digital Library.
Chicago-čujuhus (17. p.)El-Hakim, Sabry. Industrial Vision Metrology. SPIE Digital Library.
MLA-čujuhus (9. p.)El-Hakim, Sabry. Industrial Vision Metrology. SPIE Digital Library.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.