SPADA: Online learning between universities of PGRI IndonesiaMuhammad Nur Hudha, Uwes Anis Chaeruman, Sudi Dul Aji, Choirul Huda, Andista Candra Yusro, Farida Nur Kumala, Wartono Wartono, Asep Bayu Dani Nandiyanto and Ade Gafar AbdullahMATEC Web Conf., 197 (2018) 03002DOI: https://doi.org/10.1051/matecconf/201819703002
