Wava, M. V. W., A. R. Selang, and Z. Zubery. “Alma Ata University Online Library Information System Performance Testing Using K6 and GTmetrix Tools”. Jurnal Sistem Informasi Dan Teknologi Informasi, vol. 1, no. 1, Apr. 2022, pp. 39-44, https://journal-siti.org/index.php/siti/article/view/4.