Sufiyanti NN, Fitriyah H. Informal Cost Planning and Control Realize Micro Retail Operational Cost Efficiency: Perencanaan dan Pengendalian Biaya Informal Mewujudkan Efisiensi Biaya Operasional Ritel Mikro. ijler [Internet]. 2026 Jul. 25 [cited 2026 Oct. 7];21(3):10.21070/ijler.v21i3.1712. Available from: https://ijler.umsida.ac.id/index.php/ijler/article/view/1712