APA (7th ed.) Citation

Titchmarsh, E. C. (1939). The theory of functions (2nd ed.). Oxford University Press.

Chicago Style (17th ed.) Citation

Titchmarsh, E. C. The Theory of Functions. 2nd ed. London: Oxford University Press, 1939.

MLA (8th ed.) Citation

Titchmarsh, E. C. The Theory of Functions. 2nd ed. Oxford University Press, 1939.