Information System for Procurement of Goods and Services of the Politeknik Harapan Bersama (SIPHARBER). West Science Information System and Technology, [S. l.], v. 2, n. 02, p. 196–208, 2024. DOI: 10.58812/wsist.v2i02.1173. Disponível em: https://wsj.westsciences.com/index.php/wsist/article/view/1173. Acesso em: 8 dec. 2025.