Hadi, N. F., dan Khojir. “Analysis of the Relationship Between ‘merdeka belajar’ and the Progressivism Philosophy”. Almufi Journal of Measurement, Assessment, and Evaluation Education, vol. 1, no. 2, Desember 2021, hlm. 106-14, http://www.almufi.com/index.php/AJMAEE/article/view/101.