Rahayu, Luci, Mustika, Wida, AND Wahyudi, Wahid. " WEBQUAL 4.0 UNTUK EVALUASI KUALITAS LAYANAN WEBSITE E-COMMERCE ALZAFA.COM TERHADAP KEPUTUSAN PEMBELIAN ONLINE" Journal of Information System, Applied, Management, Accounting and Research [Online], Volume 2 Number 1 (4 April 2018)