Das, S. (2000). UNIX: Concepts and applications. - 2nd Ed (2nd ed.). Tata McGraw Hill publishing.
Dyfyniad Arddull ChicagoDas, Sumitabha. UNIX: Concepts and Applications. - 2nd Ed. 2nd ed. New Delhi: Tata McGraw Hill publishing, 2000.
Dyfyniad MLADas, Sumitabha. UNIX: Concepts and Applications. - 2nd Ed. 2nd ed. Tata McGraw Hill publishing, 2000.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.