APA (7th ed.) Citation

Campbell, J. E. (1926). A course of differential geometry. Clarendon Press.

Chicago Style (17th ed.) Citation

Campbell, J. E. A Course of Differential Geometry. Oxford: Clarendon Press, 1926.

MLA (9th ed.) Citation

Campbell, J. E. A Course of Differential Geometry. Clarendon Press, 1926.