ทองบุญตา ธ. Increasing Work Efficiency with Negative Reinforcement. Journal of Humanities and Social Sciences, Rajapruk University, [S. l.], v. 5, n. 3, p. 14–27, 2020. Disponível em: https://so03.tci-thaijo.org/index.php/rpu/article/view/237753. Acesso em: 7 may. 2024.