Novosáková, Jana, and Jiří Novosák. “Suitable Measurement Instruments for Questionnaire Research Between Children Respondents”. International Journal of Public Administration, Management and Economic Development 8, no. 1 (June 30, 2023): 102–109. Accessed October 22, 2024. http://www.ijpamed.eu/index.php/journal/article/view/89.