Neil, I. Zoom Lenses III. SPIE Digital Library.
Chicago-čujuhus (17. p.)Neil, Iain. Zoom Lenses III. SPIE Digital Library.
MLA-čujuhus (9. p.)Neil, Iain. Zoom Lenses III. SPIE Digital Library.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.