JESICA FEBIANANTA; SASKIA INDAH PRAMESWARI; ULY ARTA SIRAIT; NURIS SANIDA. Peningkatan Kualitas Service Excellent Bagi Pramuniaga Kedai Kopi Apak Bandar Lampung. Al-Zayn : Jurnal Ilmu Sosial & Hukum, [S. l.], v. 4, n. 1, p. 4808–4811, 2026. DOI: 10.61104/alz.v4i1.3895. Disponível em: https://ejournal.yayasanpendidikandzurriyatulquran.id/index.php/AlZayn/article/view/3895. Acesso em: 30 jan. 2026.