Sahri, Syam. “Improving the Quality of Designing Learning and Teacher Competence Using Collaborative Supervision at SDN 20 Sitiung: Peningkatan Kualitas Mendesain Pembelajaran Dan Kompetensi Guru Dengan Menggunakan Supervisi Kolaboratif Di SDN 20 Sitiung”. Journal of Vocational Education and Information Technology (JVEIT), vol. 2, no. 2, Dec. 2022, pp. 90-95, doi:10.56667/jveit.v2i2.578.