Millenia A, Sukmono RA. Strengthening the Umama Brand Promotion Strategy on the Decision to Purchase Instant Hijab Products among Students in the Sidoarjo Region. ijins [Internet]. 2023Jan.30 [cited 2024Jul.22];21:10.21070/ijins.v21i.766. Available from: https://ijins.umsida.ac.id/index.php/ijins/article/view/766