Latecki, L. Vision Geometry IX. SPIE Digital Library.
Chicago-čujuhus (17. p.)Latecki, Longin. Vision Geometry IX. SPIE Digital Library.
MLA-čujuhus (9. p.)Latecki, Longin. Vision Geometry IX. SPIE Digital Library.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.