APA (7th ed.) Citation

Leonard, J. N. (1954). Flight into space: The facts, fancies, and philosophy. New American Library.

Chicago Style (17th ed.) Citation

Leonard, Jonathan Norton. Flight into Space: The Facts, Fancies, and Philosophy. New York: New American Library, 1954.

MLA (9th ed.) Citation

Leonard, Jonathan Norton. Flight into Space: The Facts, Fancies, and Philosophy. New American Library, 1954.