Yusuf, C. 2021. Pemahaman Kepastian Hukum Transaksi Online Guru-Guru MAN 3 Jakarta. Jurnal Pengabdian Hukum Indonesia (Indonesian Journal of Legal Community Engagement). 3, 1 (Jan. 2021), 114-125. DOI:https://doi.org/10.15294/jphi.v3i1.38176.