1.

図書
図書
1. Randomized experiments for planning and evaluation : a practical guide (acid-free paper ; pbk. : acid-free paper)
Robert F. Boruch
出版情報: Thousand Oaks, Calif. : Sage Publications, c1997
シリーズ名: Applied social research methods series ; v. 44
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2.

図書
図書
2. Qualitative evaluation and research methods. 2nd ed
Michael Quinn Patton
出版情報: Newbury Park, Calif. : Sage Publications, c1990
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