William Wiersma. (1991). Research methods in education: An introduction (5th.). Allyn and Bacon.
Chicago Edition CitationWilliam Wiersma. Research Methods in Education: An Introduction. 5th. Boston: Allyn and Bacon, 1991.
MLA Edition CitationWilliam Wiersma. Research Methods in Education: An Introduction. 5th. Allyn and Bacon, 1991.
Warning: These citations may not always be 100% accurate.