Isnaidi, I., A. Lamusa, and S. Sulaeman. “ANALISIS PENDAPATAN USAHATANI KELAPA SAWIT DI DESA BULUMARIO KECAMATAN SARUDU KABUPATEN MAMUJU UTARA”. AGROTEKBIS : JURNAL ILMU PERTANIAN (e-Journal), Vol. 8, no. 2, Apr. 2020, pp. 426 -31, http://103.245.72.23/index.php/agrotekbis/article/view/659.