APA (7th ed.) Citation

Kühnel, W. (2006). Differential geometry: Curves - surfaces - manifolds (2nd ed.). American Mathematical Society.

Chicago Style (17th ed.) Citation

Kühnel, Wolfgang. Differential Geometry: Curves - Surfaces - Manifolds. 2nd ed. Providence, R.I.: American Mathematical Society, 2006.

MLA (9th ed.) Citation

Kühnel, Wolfgang. Differential Geometry: Curves - Surfaces - Manifolds. 2nd ed. American Mathematical Society, 2006.

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