Solar System Exploration @ 50 Washington, D.C., & Billings, L. (2021). 50 years of solar system exploration: Historical perspectives. National Aeronautics and Space Administration, Office of Communications, NASA History Division.
Chicago Style (17th ed.) CitationSolar System Exploration @ 50 Washington, D.C., and Linda Billings. 50 Years of Solar System Exploration: Historical Perspectives. Washington, DC: National Aeronautics and Space Administration, Office of Communications, NASA History Division, 2021.
MLA (9th ed.) CitationSolar System Exploration @ 50 Washington, D.C., and Linda Billings. 50 Years of Solar System Exploration: Historical Perspectives. National Aeronautics and Space Administration, Office of Communications, NASA History Division, 2021.
Warning: These citations may not always be 100% accurate.