APA (7th ed.) Citation

Cook, A. H. (1969). Gravity and the earth. Wykeham Publications.

Chicago Style (17th ed.) Citation

Cook, A. H. Gravity and the Earth. London: Wykeham Publications, 1969.

MLA (9th ed.) Citation

Cook, A. H. Gravity and the Earth. Wykeham Publications, 1969.

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