APA (7 वां संस्करण) प्रशस्ति पत्र

Machan, T. W. (2013). What is English ? And Why Should we Care? OUP.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Machan, Tim William. What Is English ? And Why Should We Care? UK: OUP, 2013.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Machan, Tim William. What Is English ? And Why Should We Care? OUP, 2013.