Qualitative evaluation and research methods /
Patton, Michael Quinn.
Qualitative evaluation and research methods / by Michael Quinn Patton. - 2nd ed. - Newbury Park : Sage Publications, 1990. - 532 p. ; 23 cm.
Rev ed. of : Qualitative evaluation methods, 1980
0803937792 RM160.60
Social sciences--Methodology.
Evaluation research (Social action programs).
Qualitative evaluation and research methods / by Michael Quinn Patton. - 2nd ed. - Newbury Park : Sage Publications, 1990. - 532 p. ; 23 cm.
Rev ed. of : Qualitative evaluation methods, 1980
0803937792 RM160.60
Social sciences--Methodology.
Evaluation research (Social action programs).