T. A. Simanjuntak, E. Aryanti, dan R. Elfianis, “KAJIAN KANDUNGAN HARA MAKRO VERMIKOMPOS DARI CAMPURAN DAUN KELAPA SAWIT DAN KOTORAN KAMBING MENGGUNAKAN CACING TANAH AFRICAN NIGHT CRAWLER : Study of Macronutrient Content in Vermicompost from a Mixture of Oil Palm Leaves and Goat Manure Using African Night Crawler Earthworms ”, SNIPP, vol. 4, no. 1, hlm. 6–13, Jan 2026.