B. Suwignyo, F. D. Kurniawan, N. Suseno, R. Utomo, and B. Suhartanto, “Productivity and Nutrient Content of the Second Regrowth Alfalfa (Medicago Sativa L.) with Different Photoperiod and Dolomite”, JAP, vol. 22, no. 2, pp. 74-81, Dec. 2020.