Gaya APA

Jeff, H. (1993). Differential GPS explaind : an expos of the surprising simple principles behind today`s most advanced positionong tecnology . Sunnyvale,CA: Trimble Navigation.

Gaya MLA

Jeff, Hurn. "Differential GPS explaind : an expos of the surprising simple principles behind today`s most advanced positionong tecnology". Sunnyvale,CA: Trimble Navigation, 1993. Text.