Utomo, Idi Setyo. “Keseriusan Pengelolaan Administrasi Materiil Di Instansi Pemerintah”. Journal The Winners 4, no. 2 (October 1, 2003): 63–71. Accessed April 28, 2025. https://journal.binus.ac.id/index.php/winners/article/view/3806.