APA (7th ed.) Citation

Ley, W. (1947). Rockets and space travel: The future of flight beyond the stratosphere. Viking Press.

Chicago Style (17th ed.) Citation

Ley, Willy. Rockets and Space Travel: The Future of Flight Beyond the Stratosphere. New York: Viking Press, 1947.

MLA (8th ed.) Citation

Ley, Willy. Rockets and Space Travel: The Future of Flight Beyond the Stratosphere. Viking Press, 1947.