วงศ์ประกรณ์กุล ศ. Policy Recommendations Making with Net Promoter Score. Journal of Humanities and Social Sciences, Rajapruk University, [S. l.], v. 3, n. 2, p. 56–68, 2018. Disponível em: https://so03.tci-thaijo.org/index.php/rpu/article/view/112600. Acesso em: 7 may. 2024.