APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

Gatland, Kenneth William, and Anthony M. Kunesch. Space Travel. Philosophical Library, 1953.