Analisa Kepuasan Pelanggan terhadap Pelayanan Jasa Pengiriman SPX Express dengan Metode Importance Performance Analysis (IPA). JPM [Internet]. 2026 Feb. 1 [cited 2026 Feb. 15];1(3):511-2. Available from: https://journal.al-afif.org/index.php/jpm/article/view/828