Sitorus, Syahrul, et al. “Blended Learning: Altenatif Strategi Peningkatan Kompetensi Belajar Peserta Didik Pada Masa Pandemi Covid-19 Di RA Al-Ghazali Medan Barat”. AUD Cendekia, vol. 1, no. 2, Sept. 2021, pp. 106-20, https://e-jurnal.staisumatera-medan.ac.id/index.php/audcendekia/article/view/119.