APA (7th ed.) Citation

Ley, W. (1952). The conquest of space (7. print.). Viking Pr.

Chicago Style (17th ed.) Citation

Ley, Willy. The Conquest of Space. 7. print. New York: Viking Pr, 1952.

MLA (9th ed.) Citation

Ley, Willy. The Conquest of Space. 7. print. Viking Pr, 1952.

Warning: These citations may not always be 100% accurate.