TRYFOS, P. (1996). Sampling methods for applied research: Text and cases. John Wiley and Sons.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रTRYFOS, Peter. Sampling Methods for Applied Research: Text and Cases. New York: John Wiley and Sons, 1996.
एमएलए (9वां संस्करण) प्रशस्ति पत्रTRYFOS, Peter. Sampling Methods for Applied Research: Text and Cases. John Wiley and Sons, 1996.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.