Porterfield, J. (2018). The benefits of spaceflight and space exploration (First edition.). Britannica Educational Publishing in association with Rosen Educational Services.
Цитирование в стиле Чикаго (17-е изд.)Porterfield, Jason. The Benefits of Spaceflight and Space Exploration. First edition. New York, NY: Britannica Educational Publishing in association with Rosen Educational Services, 2018.
Цитирование MLA (8-е изд.)Porterfield, Jason. The Benefits of Spaceflight and Space Exploration. First edition. Britannica Educational Publishing in association with Rosen Educational Services, 2018.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.