Oprea, J. (2007). Differential geometry and its applications. Mathematical Association of America.
Chicago-čujuhus (17. p.)Oprea, John. Differential Geometry and Its Applications. Washington, D.C.: Mathematical Association of America, 2007.
MLA-čujuhus (9. p.)Oprea, John. Differential Geometry and Its Applications. Mathematical Association of America, 2007.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.