Michel, U. Earth Resources and Environmental Remote Sensing/GIS Applications. SPIE Digital Library.
Chicago-čujuhus (17. p.)Michel, Ulrich. Earth Resources and Environmental Remote Sensing/GIS Applications. SPIE Digital Library.
MLA-čujuhus (9. p.)Michel, Ulrich. Earth Resources and Environmental Remote Sensing/GIS Applications. SPIE Digital Library.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.