R. Sinaga, N. Waluyo, R. W. . Arief, and G. O. . Manurung, “Adaptation Test of Some Varieties Shallots (Allium Cepa Var Aggregatum L.) on The Rain Season (Off Season) In Acid Dry Land, Lampung”, JPPT, vol. 23, no. 3, pp. 419-428, Sep. 2023.