Farah Qalbia and Shinta Amelia (2022) “Analisis Penerapan Metode Activity Based Costing (ABC) Dalam Menentukan Tarif Sewa Kamar Kos Homestay Grace II”, OPTIMAL Jurnal Ekonomi dan Manajemen, 2(4), pp. 385–401. doi: 10.55606/optimal.v2i4.4463.