Handayani, Fitri, et al. “Development of E-Module Based on Problem Based Learning Assisted With Scratch Applications to Improve Students Computational Thinking Skills”. Jurnal Kependidikan: Jurnal Hasil Penelitian Dan Kajian Kepustakaan Di Bidang Pendidikan, Pengajaran Dan Pembelajaran, vol. 9, no. 2, May 2023, pp. 456-69, doi:10.33394/jk.v9i2.7790.