Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.