“PENGARUH MODAL, BIAYA, DAN VOLUME PENJUALAN TERHADAP KEUNTUNGAN PEDAGANG PAKAIAN BEKAS DI KOTA TIMIKA”. 2021. JURNAL ULET (Utility, Earning and Tax) 5 (1): 53-69. http://ejournal.stiejb.ac.id/index.php/jurnal-ulet/article/view/160.