“Studi Efektivitas Metode Pembayaran Cash on Delivery (COD) dalam Transaksi E-Commerce di Institut Syekh Abdul Halim Hasan Binjai”, JNIE, vol. 1, no. 01, Jan 2026, Diakses: 1 Agustus 2026. [Daring]. Tersedia pada: https://jurnal.almaidah.or.id/index.php/JNIE/article/view/335