ABRAHAM, I. . Penghitungan Efisiensi Pelatihan dengan Return on Training Invesment . Multidisciplinary Journal of Education , Economic and Culture , [S. l.], v. 1, n. 2, p. 95–102, 2023. DOI: 10.61231/mjeec.v1i2.125. Disponível em: https://sunanbonang.org/index.php/mjeec/article/view/125. Acesso em: 28 sep. 2024.