Cohen, L. (1994). Research methods in education (4th ed.). Routledge.
Tohutoru Kātū Chicago (17th ed.)Cohen, Louis. Research Methods in Education. 4th ed. London: Routledge, 1994.
Tohutoro MLA (9th ed.)Cohen, Louis. Research Methods in Education. 4th ed. Routledge, 1994.
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