Performance indicators in food service: operational efficiency, margin, and productivity. International Seven Journal of Multidisciplinary, [S. l.], v. 2, n. 5, 2023. DOI: 10.56238/isevmjv2n5-041. Disponível em: https://sevenpubl.com.br/ISJM/article/view/ZVM29. Acesso em: 3 apr. 2026.