APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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