Παραπομπή APA

Sneddon, I. N. (1957). Elements of partial differential equations. Mc Graw - Hill.

Παραπομπή Chicago Style

Sneddon, Ian N. Elements of Partial Differential Equations. New York: Mc Graw - Hill, 1957.

Παραπομπή MLA

Sneddon, Ian N. Elements of Partial Differential Equations. Mc Graw - Hill, 1957.