University of the Philippines Research Organization for Better Education (UPROBE). (1990). Educational research: Problem conceptualization and research designs. UPROBE.
Chicago Style (17th ed.) CitationUniversity of the Philippines Research Organization for Better Education (UPROBE). Educational Research: Problem Conceptualization and Research Designs. Manila: UPROBE, 1990.
MLA citiranjeUniversity of the Philippines Research Organization for Better Education (UPROBE). Educational Research: Problem Conceptualization and Research Designs. UPROBE, 1990.
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