Wiersma, W. (1985). Research methods in education: An introduction (3rd ed., rev. print.). Allyn and Bacon.
Čikaški stil citiranja (17. izdanje)Wiersma, William. Research Methods in Education: An Introduction. 3rd ed., rev. print. Boston: Allyn and Bacon, 1985.
MLA način citiranja (8. izdanje)Wiersma, William. Research Methods in Education: An Introduction. 3rd ed., rev. print. Allyn and Bacon, 1985.
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