Darmanto, Tedjo, et al. “Analysis of the Effect of Website Quality on Customer Satisfaction Using the Webqual 4.0 Method Case Study: Villa Merah Picture Tutoring”. International Transactions on Electrical Engineering and Computer Science, vol. 3, no. 4, Jan. 2025, pp. 192-9, doi:10.62760/iteecs.3.4.2024.99.