“ANALISIS MARGINAL REVENUE PRODUKSI TELUR AYAM LOKAL PADA USAHA AYAM PETELUR BAPAK MUSU BUNGA”. JURNAL ULET (Utility, Earning and Tax), vol. 2, no. 2, Nov. 2018, p. 5, http://ejournal.stiejb.ac.id/index.php/jurnal-ulet/article/view/24.