[en] NASA Systems Engineering Handbook www.Militarybookshop.Co.UK
[en] The Global Positioning System · A Shared National Asset National Academies Press
[en] Only Superpower · Reflections on Strength, Weakness, and Anti-Americanism Lexington Books
[en] FAR/AIM 2021 · Up-To-Date FAA Regulations / Aeronautical Information Manual Simon and Schuster
[en] Pilot's Handbook of Aeronautical Knowledge Skyhorse
[en] Far/aim 2020 Skyhorse