Emme, E. M. (1961). Aeronautics and astronautics: An american chronology of science and technology in the exploration of space ; 1915 - 1960. US Gov. Print. Off..
Citace podle Chicago (17th ed.)Emme, Eugene M. Aeronautics and Astronautics: An American Chronology of Science and Technology in the Exploration of Space ; 1915 - 1960. Washington, DC: US Gov. Print. Off., 1961.
Citace podle MLA (8th ed.)Emme, Eugene M. Aeronautics and Astronautics: An American Chronology of Science and Technology in the Exploration of Space ; 1915 - 1960. US Gov. Print. Off., 1961.
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