Putra Wathan F. Legal Effectiveness In Providing Consumer Protection For Online Sales And Purchase At Ecommerce. jrssem [Internet]. 2023 Jun. 10 [cited 2025 Dec. 5];2(11):2707 – 2718. Available from: https://jrssem.publikasiindonesia.id/index.php/jrssem/article/view/462