Παραπομπή APA

Sneddon, I. N. Elements of partial differential equations. Mc Graw Hill.

Παραπομπή Chicago Style

Sneddon, Ian N. Elements of Partial Differential Equations. N. Delhi: Mc Graw Hill.

Παραπομπή MLA

Sneddon, Ian N. Elements of Partial Differential Equations. Mc Graw Hill.