Sarkar S. ., . (2007). Unix The Textbook / S.M.Sarkar. New Delhi: Pearson.
Sarkar S.M, . 2007. Unix The Textbook / S.M.Sarkar. New Delhi: Pearson.
Sarkar S.M, . Unix The Textbook / S.M.Sarkar. New Delhi: Pearson. 2007.