Downing, D., & Clark, J. (1997). Statistics the easy way (3rd ed.). Barron's Educational Series.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDowning, Douglas, और Jeff Clark. Statistics the Easy Way. 3rd ed. Hauppauge, NY: Barron's Educational Series, 1997.
एमएलए (8वां संस्करण) प्रशस्ति पत्रDowning, Douglas, और Jeff Clark. Statistics the Easy Way. 3rd ed. Barron's Educational Series, 1997.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.