HANÇER, A. H., and Z. TÜFEKÇİ. “EXAMINATION OF POSITIVE AND NEGATIVE PERFECTIONISM LEVELS OF MIDDLE SCHOOL 8TH GRADE STUDENTS”. INTERNATIONAL JOURNAL OF SOCIAL HUMANITIES SCIENCES RESEARCH, vol. 4, no. 12, Nov. 2017, pp. 1002-8, doi:10.26450/jshsr.183.