Engkus E. SYSTEMS APPROACH IN PUBLIC ADMINISTRATION: A THINKING FRAMEWORK BASED ON INPUT–PROCESS–OUTPUT–FEEDBACK–ENVIRONMENT. j. governansi [Internet]. 2026 Apr. 14 [cited 2026 Jun. 8];12(1):99-112. Available from: http://103.127.96.46/index.php/JGS/article/view/24172