Παραπομπή APA

Copson, E. T. (1975). Partial differential equations. Cambridge University press.

Παραπομπή Chicago Style

Copson, E T. Partial Differential Equations. Cambridge: Cambridge University press, 1975.

Παραπομπή MLA

Copson, E T. Partial Differential Equations. Cambridge University press, 1975.