Ruda, M. Optical Alignment. SPIE Digital Library.
Chicago-čujuhus (17. p.)Ruda, Mitchell. Optical Alignment. SPIE Digital Library.
MLA-čujuhus (9. p.)Ruda, Mitchell. Optical Alignment. SPIE Digital Library.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.