APA-čujuhus (7. p.)
Jensen, R. R. (2014). Geographic information systems exercise workbook. Prentice Hall.
Chicago-čujuhus (17. p.)
Jensen, Ryan R. Geographic Information Systems Exercise Workbook. Boston, Mass: Prentice Hall, 2014.
MLA-čujuhus (9. p.)
Jensen, Ryan R. Geographic Information Systems Exercise Workbook. Prentice Hall, 2014.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.