APA (7th ed.) Citation

COPSON, E. (1935). An introduction to the theory of functions: Of a complex variable. Clarendon Press.

Chicago Style (17th ed.) Citation

COPSON, E.T. An Introduction to the Theory of Functions: Of a Complex Variable. Oxford: Clarendon Press, 1935.

MLA (9th ed.) Citation

COPSON, E.T. An Introduction to the Theory of Functions: Of a Complex Variable. Clarendon Press, 1935.