RIYONO, B.; RIFKIANTI, W. Android-Based Information System Of Online Teaching Services With Geo-Location Determination. bit-Tech : Binary Digital - Technology, [S. l.], v. 1, n. 1, p. 9–18, 2018. DOI: 10.32877/bt.v1i1.6. Disponível em: https://jurnal.kdi.or.id/index.php/bt/article/view/6. Acesso em: 29 mar. 2024.