MANSUR, Muhammad; DJAELANI, Abdul Kodir. Business Strategy Approach to Informal Small Businesses in Increasing Productivity and Competitiveness . Golden Ratio of Marketing and Applied Psychology of Business, [S. l.], v. 3, n. 1, p. 01–19, 2022. DOI: 10.52970/grmapb.v3i1.206. Disponível em: https://goldenratio.id/index.php/grmapb/article/view/206. Acesso em: 28 apr. 2026.