Gunawan Widjaja, Mochammad Roufal, Martin Maurer M.Marpaung, and M Reydhi Suwanda. 2022. “E – SIGNATURE DALAM E – KONTRAK”. Jurnal Cakrawala Ilmiah 1 (6):1369-82. https://doi.org/10.53625/jcijurnalcakrawalailmiah.v1i6.1504.