Samsu, R., W. Hardyanto, and I. Made Sudana. “Efektifitas Model Supervisi Akademik Online Pada Guru Sekolah Menengah Kejuruan”. Educational Management, Vol. 6, no. 2, Apr. 2018, pp. 95-99, https://journal.unnes.ac.id/sju/eduman/article/view/22773.