KRISTIANTO, A. Negosiasi Harga e-Purchasing Katalog Dalam Pengadaan Barang/Jasa Pemerintah. Jurnal Pengadaan Barang dan Jasa, [S. l.], v. 1, n. 1, p. 53–60, 2022. DOI: 10.55961/jpbj.v1i1.14. Disponível em: https://journal.ifpi.or.id/index.php/jpbj/article/view/14. Acesso em: 18 apr. 2025.