Thorpe, J. A. (1979). Elementary topics in differential geometry. New York: Springer-Verlag.
Dyfyniad Arddull ChicagoThorpe, John A. Elementary Topics in Differential Geometry. New York: Springer-Verlag, 1979.
Dyfyniad MLAThorpe, John A. Elementary Topics in Differential Geometry. New York: Springer-Verlag, 1979.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.