MAHESH, S. (2016). I DID IT MATHEMATICS - REVISIED EDITION - BOOK 4. CAMBRIDGE UNIVERSITY PRESS.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMAHESH, SUDHA. I DID IT MATHEMATICS - REVISIED EDITION - BOOK 4. DELHI: CAMBRIDGE UNIVERSITY PRESS, 2016.
एमएलए (9वां संस्करण) प्रशस्ति पत्रMAHESH, SUDHA. I DID IT MATHEMATICS - REVISIED EDITION - BOOK 4. CAMBRIDGE UNIVERSITY PRESS, 2016.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.