APA (7th ed.) Citation

Copson, E. T. (1935). Theory of Functions of a Complex Variable. Clarendon Press.

Chicago Style (17th ed.) Citation

Copson, E. T. Theory of Functions of a Complex Variable. Oxford: Clarendon Press, 1935.

MLA (9th ed.) Citation

Copson, E. T. Theory of Functions of a Complex Variable. Clarendon Press, 1935.