APA (7th ed.) Citation

Ward, R. S., & Wells, R. O. (1990). Twistor geometry and field theory. Cambridge University Press.

Chicago Style (17th ed.) Citation

Ward, R. S., and R. O. Wells. Twistor Geometry and Field Theory. Cambridge [Cambridgeshire] ; New York: Cambridge University Press, 1990.

MLA (8th ed.) Citation

Ward, R. S., and R. O. Wells. Twistor Geometry and Field Theory. Cambridge University Press, 1990.