Royani, W., S. Purnomo, and H. Rahmi. “Coconut Water Fermentation Response (Cocos Nucifera L.) Against Growth Of Curly Lettuce Plants (Lactuca Sativa L. Var. Grand Rapids F1)”. Jurnal Ilmiah Wahana Pendidikan, Vol. 7, no. 3, June 2021, pp. 218-24, doi:10.5281/zenodo.5077203.