APA (7th ed.) Citation

Godfrey, C., & Siddons, A. W. (1908). Modern geometry. Cambridge University.

Chicago Style (17th ed.) Citation

Godfrey, Charles, and A. W. Siddons. Modern Geometry. Cambridge: Cambridge University, 1908.

MLA (9th ed.) Citation

Godfrey, Charles, and A. W. Siddons. Modern Geometry. Cambridge University, 1908.