fadyllah, Lala, et al. “Design, Development, and Testing of a Web-Based Digital Catalog Information System for Tinov Beauty Studio Using the Waterfall Method and Black Box Testing”. JURNAL TEKNOLOGI DAN ILMU KOMPUTER PRIMA (JUTIKOMP), vol. 9, no. 2, Oct. 2026, pp. 151-67, doi:10.34012/jutikomp.v9i2.8839.