HANIFAH, Wita Nidia; ZAIM, Ilma Aulia. Value Proposition Testing For Private Event Package at My Kopi O Serang. Journal Research of Social Science, Economics, and Management, [S. l.], v. 4, n. 11, p. 1900–1912, 2025. DOI: 10.59141/jrssem.v4i11.885. Disponível em: https://jrssem.publikasiindonesia.id/index.php/jrssem/article/view/885. Acesso em: 5 dec. 2025.