Παραπομπή APA

Haack, W. (1972). Lectures on partial differential equations. Pergamon press.

Παραπομπή Chicago Style

Haack, Wolfgang. Lectures on Partial Differential Equations. Oxford: Pergamon press, 1972.

Παραπομπή MLA

Haack, Wolfgang. Lectures on Partial Differential Equations. Pergamon press, 1972.