MAPPI, Safrida. PENGARUH MODAL, LUAS LAHAN, JUMLAH TENAGA KERJA TERHADAP PENDAPATAN USAHATANI KELAPA SAWIT DI KECAMATAN RAYA KAHEAN KABUPATEN SIMALUNGUN. Agriprimatech, [S. l.], v. 2, n. 1, p. 55–61, 2019. Disponível em: http://139.162.50.187/index.php/Agriprimatech/article/view/760. Acesso em: 2 apr. 2026.