FERNALDI, Richie. PERUMUSAN ADDED VALUE DALAM KONSEP BISNIS COFFEEIN MELALUI PENDEKATAN BLUE OCEAN STRATEGY. PERFORMA, [S. l.], v. 1, n. 1, p. 105–111, 2016. DOI: 10.37715/jp.v1i1.103. Disponível em: https://ojs.somebut.my.id/index.php/performa/article/view/103. Acesso em: 19 feb. 2026.