Maharani, Santika, & Iskandar Ali Alam.
" Pengaruh Kualitas Produk dan Pelayanan Terhadap LoyalitasPelanggan 20 Kopi Di Masa Pandemi Covid-19." <em>Journal of Information System, Applied, Management, Accounting and Research</em> [Online], 6.4 (2022): 773-779. Web.  4 Jul. 2025