Bell, J. N. (1960). Seven into space: The story of the mercury astronauts. Popular Mechanics.
Cita Chicago Style (17a ed.)Bell, Joseph N. Seven into Space: The Story of the Mercury Astronauts. Chicago: Popular Mechanics, 1960.
Cita MLA (9a ed.)Bell, Joseph N. Seven into Space: The Story of the Mercury Astronauts. Popular Mechanics, 1960.
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