Willmore, T. Introduction to differential geometry.
Chicago-čujuhus (17. p.)Willmore, T. Introduction to Differential Geometry.
MLA-čujuhus (9. p.)Willmore, T. Introduction to Differential Geometry.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.