CHEN, C.-Y.; CHEN, C.-H.; HSU, A.-C. Cost Efficiency Affects Sustainable Operations. International Journal of Economics and Financial Issues, [S. l.], v. 8, n. 1, p. 90–92, 2018. Disponível em: https://www.econjournals.com/index.php/ijefi/article/view/5956. Acesso em: 20 apr. 2024.