APA-referens (7:e uppl.)
Oprea, J. (2007). Differential geometry and its applications. Mathematical Association of America.
Chicago-referens (17:e uppl.)
Oprea, John. Differential Geometry and Its Applications. Washington, D.C.: Mathematical Association of America, 2007.
MLA-referens (9:e uppl.)
Oprea, John. Differential Geometry and Its Applications. Mathematical Association of America, 2007.
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