APA استشهاد

Holden , H., & Karlsen, K. H. (2012). Nonlinear partial differential equations. Springer.

استشهاد بنمط شيكاغو

Holden , Helge, و Kenneth H. Karlsen. Nonlinear Partial Differential Equations. London: Springer, 2012.

MLA استشهاد

Holden , Helge, و Kenneth H. Karlsen. Nonlinear Partial Differential Equations. Springer, 2012.