Παραπομπή APA

Parikh, G. (1988). Techniques of program and system maintenance. - 2nd ed. (2nd ed.). QED information sciences.

Παραπομπή Chicago Style

Parikh, Girish. Techniques of Program and System Maintenance. - 2nd Ed. 2nd ed. Wellesley: QED information sciences, 1988.

Παραπομπή MLA

Parikh, Girish. Techniques of Program and System Maintenance. - 2nd Ed. 2nd ed. QED information sciences, 1988.