APA (7 वां संस्करण) प्रशस्ति पत्र

Das Sumitabha. (2012). UNIX: Concepts And Applications (4th.). Tata McGraw Hill Education Private Limited.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Das Sumitabha. UNIX: Concepts And Applications. 4th. New Delhi: Tata McGraw Hill Education Private Limited, 2012.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Das Sumitabha. UNIX: Concepts And Applications. 4th. Tata McGraw Hill Education Private Limited, 2012.