Patton, Michael Quinn.
How to use qualitative methods in evaluation. - 2nd ed. - California, US : Sage, 1987. - 176 p.
0-8039-3129-8
Social science Methodology.
Evaluation research Social action programs.
361.6 PAT.
How to use qualitative methods in evaluation. - 2nd ed. - California, US : Sage, 1987. - 176 p.
0-8039-3129-8
Social science Methodology.
Evaluation research Social action programs.
361.6 PAT.