SIRKO, Valerii. Financial Planning and Management in a Tattoo Studio: Practical Advice from Valerii Sirko. The American Journal of Management and Economics Innovations, [S. l.], v. 8, n. 01, p. 17–25, 2026. DOI: 10.37547/tajmei/Volume08Issue01-03. Disponível em: https://theamericanjournals.com/index.php/tajmei/article/view/7289. Acesso em: 28 jan. 2026.