APA (7th ed.) Zitazioa
Wiersma, W. (1975). Research methods in education: An introduction (4th ed.). Allyn.
Chicago Style (17th ed.) Zitazioa
Wiersma, William. Research Methods in Education: An Introduction. 4th ed. Boston: Allyn, 1975.
MLA (9th ed.) Zitazioa
Wiersma, William. Research Methods in Education: An Introduction. 4th ed. Allyn, 1975.
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