Putra, I Putu Ari Santika, et al. “Pengaruh Sistem Kartel Terhadap Stabilitas Persaingan Usaha Di Indonesia”. Jurnal Preferensi Hukum, vol. 1, no. 2, Sept. 2020, pp. 116-20, https://www.ejournal.warmadewa.ac.id/index.php/juprehum/article/view/2348.