APA (7th ed.) Citation

Cramp, L. G. (1955). Space, gravity and the flying saucer. British Book Centre.

Chicago Style (17th ed.) Citation

Cramp, Leonard G. Space, Gravity and the Flying Saucer. New York: British Book Centre, 1955.

MLA (9th ed.) Citation

Cramp, Leonard G. Space, Gravity and the Flying Saucer. British Book Centre, 1955.

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