Cita APA (7th ed.)

Pressel, P., & Allen, N. (2013). Meeting the challenge: The Hexagon KH-9 reconnaissance satellite. Published by American Institute of Aeronautics and Astronautics, Inc..

Cita Chicago (17th ed.)

Pressel, Philip, i Ned Allen. Meeting the Challenge: The Hexagon KH-9 Reconnaissance Satellite. Reston, Virginia: Published by American Institute of Aeronautics and Astronautics, Inc., 2013.

Cita MLA (9th ed.)

Pressel, Philip, i Ned Allen. Meeting the Challenge: The Hexagon KH-9 Reconnaissance Satellite. Published by American Institute of Aeronautics and Astronautics, Inc., 2013.