Suprapto, Suprapto. “Pengembangan Penangkaran Bibit Lada Di Kelompok Tani Desa Sukamarga, Lampung Utara”. Jurnal Penelitian Pertanian Terapan 11, no. 2 (July 24, 2017). Accessed May 4, 2024. https://jurnal.polinela.ac.id/jppt/article/view/230.