Utomo S. Analisis Yuridis Jual-Beli Online Buku Elektronik (E-Book) (E-Commerce) Dari Persepektif Hukum Perdata Indonesia. masile [Internet]. 5Nov.2021 [cited 10Nov.2025];2(2). Available from: https://jurnal.ipeba.ac.id/index.php/masile/article/view/36