APA (7th ed.) Citation

Gatland, K. W., & Kunesch, A. M. (1953). Space travel (2. impr.). Philosophical Library.

Chicago Style (17th ed.) Citation

Gatland, Kenneth W., and Anthony M. Kunesch. Space Travel. 2. impr. New York: Philosophical Library, 1953.

MLA (9th ed.) Citation

Gatland, Kenneth W., and Anthony M. Kunesch. Space Travel. 2. impr. Philosophical Library, 1953.

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