Umam, Khoirul, et al. “Pembangunan E-Commerce Pada Kegiatan Penjualan Probiotik Herbal Sari Rempah Berbasis Website Study Kasus UKM ‘Wiro Djoyo’ Reksosari”. JITU : Journal Informatic Technology And Communication, vol. 4, no. 1, Jan. 2020, pp. 27-33, https://ejournal.uby.ac.id/index.php/jitu/article/view/186.