Andriansyah, Taufik, et al. “Consumer Protection in the Pre-Order System for Digital Products That Do Not Meet Specifications in Relation to Law No. 8 of 1999 Concerning Consumer Protection”. Ilmu Hukum Prima (IHP), vol. 9, no. 2, Oct. 2026, pp. 278-8, doi:10.34012/jihp.v9i2.8483.