پ. ی. د. هەتاو کریم خدر and عثمان برايم حمد 2023. Methodological principles of content analysis and its application in sociology. Polytechnic Journal of Humanities and Social Sciences. 4, 2 (Dec. 2023), 881-889. DOI:https://doi.org/10.25156/ptjhss.v4n2y2023.pp881-889.