Wijaya, R., and E. Adelina. “RESPONS PERTUMBUHAN BIBIT KOPI ARABIKA TERHADAP PEMBERIAN EKSTRAK BAWANG MERAH (Allium Cepa L.)”. AGROTEKBIS : JURNAL ILMU PERTANIAN (e-Journal), Vol. 11, no. 1, Feb. 2023, pp. 258 -, http://103.245.72.23/index.php/agrotekbis/article/view/1632.