Παραπομπή APA

Tiwari, N. K. S. (2006). Operations research.

Παραπομπή Chicago Style

Tiwari, N K; Shandilya. Operations Research. Prentice-Hall of India Pvt. Ltd., New Delhi, 2006.

Παραπομπή MLA

Tiwari, N K; Shandilya. Operations Research. 2006.