Wiersma, W. (1995). Research methods in education: An introduction (6th ed.). Allyn and Bacon.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWiersma, William. Research Methods in Education: An Introduction. 6th ed. Boston: Allyn and Bacon, 1995.
एमएलए (9वां संस्करण) प्रशस्ति पत्रWiersma, William. Research Methods in Education: An Introduction. 6th ed. Allyn and Bacon, 1995.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.