KHOFIFAH; CHRISTANTO, Febrian Wahyu. LOCATION BASED SERVICE IN GEOGRAPHIC MAPPING OF BLOOD DONOR MOBILE UNITS. POSITIF : Jurnal Sistem dan Teknologi Informasi, [S. l.], v. 9, n. 2, p. 95–106, 2023. DOI: 10.31961/positif.v9i2.1849. Disponível em: https://ejurnal.poliban.ac.id/index.php/Positif/article/view/1849. Acesso em: 12 may. 2024.