Παραπομπή APA

Epstein, B. (1962). Partial differential equations: An introduction.

Παραπομπή Chicago Style

Epstein, Bernard. Partial Differential Equations: An Introduction. Tata McGraw Hill Publishing Co. Ltd., New Delhi, 1962.

Παραπομπή MLA

Epstein, Bernard. Partial Differential Equations: An Introduction. 1962.