APA (7th ed.) Citation

Willmore, T. (1966). An introduction to differential geometry (Repr.). Clarendon Press.

Chicago Style (17th ed.) Citation

Willmore, Thomas. An Introduction to Differential Geometry. Repr. Oxford: Clarendon Press, 1966.

MLA (9th ed.) Citation

Willmore, Thomas. An Introduction to Differential Geometry. Repr. Clarendon Press, 1966.

Warning: These citations may not always be 100% accurate.