Ninglasari, Sri Yayu, dkk. “MARKET STRUCTURE IN ISLAMIC PERSPECTIVE: A CRITICAL EXAMINATION OF THE TERMS PERFECT AND IMPERFECT COMPETITION”. Jurnal Justisia Ekonomika: Magister Hukum Ekonomi Syariah, vol. 7, no. 1, Juni 2023, doi:10.30651/justeko.v7i1.18132.