APA استشهاد

Blair, D. E. (1976). Contact manifolds in Riemannian geometry. Springer-Verlag.

استشهاد بنمط شيكاغو

Blair, David E. Contact Manifolds in Riemannian Geometry. Berlin ; New York: Springer-Verlag, 1976.

MLA استشهاد

Blair, David E. Contact Manifolds in Riemannian Geometry. Springer-Verlag, 1976.