Παραπομπή APA

Ames, W. F. (1977). Numerical methods for partial differential equations (23.).

Παραπομπή Chicago Style

Ames, William F. Numerical Methods for Partial Differential Equations. 23. Academic Press, New York, 1977.

Παραπομπή MLA

Ames, William F. Numerical Methods for Partial Differential Equations. 23. 1977.