RAMADAN, Prima; SYARIF, Abdul Azis; ARIANI, Farida. Penerapan Metode Lean Six Sigma dalam Rangka Meningkatkan Kualitas Pelayanan di Perusahaan PT ID Express. JiTEKH, [S. l.], v. 10, n. 1, p. 21–29, 2022. DOI: 10.35447/jitekh.v10i1.545. Disponível em: https://www.jurnal.harapan.ac.id/index.php/Jitekh/article/view/545. Acesso em: 26 aug. 2025.