Rafiudin, Safaat, and Rachmad Fitriyanto. 2021. “Penyusunan Rekomendasi Kelulusan Siswa Sekolah Dasar Di Era Pandemi COVID-19 Menggunakan Composite Perfomance Index (CPI)”. Semnas Corisindo 1 (1), 569-78. https://ejournal.raharja.ac.id/index.php/corisindo/article/view/1987.