“The Production of Botanical Pesticides from Cigarette Butts: A Study of the Tunas Harapan Farmers Group at KM 20, North Balikpapan” (2025) Seminar Nasional Pengabdian Kepada Masyarakat (SEPAKAT), 4(1), pp. pages 43–48. doi:10.35718/sepakat.v4i1.8481672.