Stewart, V. (2006). Improving poor performance detection causes & remedies. Infinity Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रStewart, Valerie. Improving Poor Performance Detection Causes & Remedies. New Delhi: Infinity Books, 2006.
एमएलए (9वां संस्करण) प्रशस्ति पत्रStewart, Valerie. Improving Poor Performance Detection Causes & Remedies. Infinity Books, 2006.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.