APA (7th ed.) Citation

Brannan, D. A., Esplen, M. F., & Gray, J. (2012). Geometry (2nd ed.). The Open University.

Chicago Style (17th ed.) Citation

Brannan, David A., Matthew F. Esplen, and Jeremy Gray. Geometry. 2nd ed. New York: The Open University, 2012.

MLA (8th ed.) Citation

Brannan, David A., et al. Geometry. 2nd ed. The Open University, 2012.