KLINGENBERG, W. (1978). A course in differential geometry. Springer- verlag.
Cita Chicago (17th ed.)KLINGENBERG, Wilhelm. A Course in Differential Geometry. New York: Springer- verlag, 1978.
Cita MLA (9th ed.)KLINGENBERG, Wilhelm. A Course in Differential Geometry. Springer- verlag, 1978.
Atenció: Aquestes cites poden no estar 100% correctes.