Marketing Improvement Through Making Cumcum Cakes in Various Flavors at the Kampung Tajung Bread and Cake Business in Polagan Village, Sampang Regency. Semar: Jur. Peng. Kep. Masy. [Internet]. 2026 May 15 [cited 2026 May 19];2(1):1-10. Available from: https://ejournal.ubhara.ac.id/index.php/semar/article/view/1681