APA-čujuhus (7. p.)
Asphaug, V., & Sorensen, E. (2010). Global positioning systems. Nova Science Publishers.
Chicago-čujuhus (17. p.)
Asphaug, Viggo, juo Elias Sorensen. Global Positioning Systems. New York: Nova Science Publishers, 2010.
MLA-čujuhus (9. p.)
Asphaug, Viggo, juo Elias Sorensen. Global Positioning Systems. Nova Science Publishers, 2010.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.