(1991). GPS Navstar, Global Positioning System: User's overview / [prepared by ARINC Research Corporation for the Program Director, Navstar Global Positioning System Joint Program Office].
Чикаго-гийн эшлэл (17 дахь хэвлэлт)GPS Navstar, Global Positioning System: User's Overview / [prepared by ARINC Research Corporation for the Program Director, Navstar Global Positioning System Joint Program Office]. 1991.
MLA -ийн эшлэл (9 дэх хэвлэлт)GPS Navstar, Global Positioning System: User's Overview / [prepared by ARINC Research Corporation for the Program Director, Navstar Global Positioning System Joint Program Office]. 1991.
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