Kuhnel, W. (2006). Differential geometry: Curves - surfaces - manifolds .-2nded. (2nd ed.). American Mathematical Society.
استشهاد بنمط شيكاغوKuhnel, Wolfgang. Differential Geometry: Curves - Surfaces - Manifolds .-2nded. 2nd ed. Providence, R.I.: American Mathematical Society, 2006.
MLA استشهادKuhnel, Wolfgang. Differential Geometry: Curves - Surfaces - Manifolds .-2nded. 2nd ed. American Mathematical Society, 2006.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.