IVAN, Bernardus; MUNGGANA, Wira. Implementasi Aplikasi Manajemen Proyek di PT GLOBAL TWIN STAR Menggunakan Zoho Project. Ultima InfoSys : Jurnal Ilmu Sistem Informasi, [S. l.], v. 4, n. 2, p. 65–68, 2013. DOI: 10.31937/si.v4i2.244. Disponível em: https://ejournals.umn.ac.id/index.php/SI/article/view/244. Acesso em: 15 jul. 2025.