Παραπομπή APA

John, F. (1978). Partial differential equations (3rd ed.). Springer-Verlag.

Παραπομπή Chicago Style

John, Fritz. Partial Differential Equations. 3rd ed. Springer-Verlag, 1978.

Παραπομπή MLA

John, Fritz. Partial Differential Equations. 3rd ed. Springer-Verlag, 1978.