Amelda, Banon, and Erna Bernadetta Sitanggang. “Analysis of Banking Industry Performance Efficiency in Indonesia Using Parametric and Nonparametric Methods”. Journal The Winners 19, no. 1 (March 31, 2018): 53-67. Accessed July 22, 2024. https://journal.binus.ac.id/index.php/winners/article/view/4760.