ULKHAQ, M. Mujiya; PRATIWI, Trisna Nagris. Formulating purchasing strategies with kraljic portfolio matrix: A case study in an investment management company . Jurnal Sistem dan Manajemen Industri, [S. l.], v. 8, n. 2, p. 119–128, 2024. DOI: 10.30656/jsmi.v8i2.8999. Disponível em: https://e-jurnal.lppmunsera.org/index.php/JSMI/article/view/8999. Acesso em: 17 jun. 2025.