Porterfield, J. (2018). The benefits of spaceflight and space exploration (First edition.). Britannica Educational Publishing in association with Rosen Educational Services.
Cita Chicago Style (17a ed.)Porterfield, Jason. The Benefits of Spaceflight and Space Exploration. First edition. New York, NY: Britannica Educational Publishing in association with Rosen Educational Services, 2018.
Cita MLA (8a ed.)Porterfield, Jason. The Benefits of Spaceflight and Space Exploration. First edition. Britannica Educational Publishing in association with Rosen Educational Services, 2018.
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