Gaya APA
Tveito, A., Winther, R. (2005).
Introduction to Partial Differential Equations (1st ed. 2005.).
Berlin, Heidelberg:
Springer.
Gaya MLA
Tveito, Aslak.., Winther, Ragnar..
"Introduction to Partial Differential Equations".
1st ed. 2005.
Berlin, Heidelberg:
Springer,
2005.
E Book.