APA-viite (7. p.)

Asphaug, V., & Sorensen, E. (2010). Global positioning systems. Nova Science Publishers.

Chicago-viite (17. p.)

Asphaug, Viggo, ja Elias Sorensen. Global Positioning Systems. New York: Nova Science Publishers, 2010.

MLA-viite (9. p.)

Asphaug, Viggo, ja Elias Sorensen. Global Positioning Systems. Nova Science Publishers, 2010.