Παραπομπή APA

J.N.Sharma & Kehar Sing. (2001). Partial differential equations for Engineers and Scientists (1st.). Narosa.

Παραπομπή Chicago Style

J.N.Sharma και Kehar Sing. Partial Differential Equations for Engineers and Scientists. 1st. New Delhi: Narosa, 2001.

Παραπομπή MLA

J.N.Sharma και Kehar Sing. Partial Differential Equations for Engineers and Scientists. 1st. Narosa, 2001.