Dewi, Ratna, and Hery Sutrisno. 2017. “Karakter Agronomi Dan Daya Hasil Tiga Klon Ubi Jalar Ungu (Ipomoea Batatas) Di Lahan Masam Lampung”. Jurnal Penelitian Pertanian Terapan 14 (1). https://doi.org/10.25181/jppt.v14i1.137.