TY - CPAPER AU - O.Yildirim AU - R. Minga AU - A.C. Mercanlioglu AU - E. E.Yildirim TI - VALIDITY AND RELIABILITY A PERFORMANS EVALUATION SCALE:A FOCUS GROUP STUDY T2 - 4th International Multidisciplinary Scientific Conference on Social Sciences and Arts SGEM 2017 PY - 2017 SP - 1125 EP - 1134 DO - 10.5593/sgemsocial2017/15/S05.141 PB - STEF92 Technology ER -