Kifah, A. S., A. Sutanto, H. Widowati, and M. Muhfahroyin. “Organic Fertilizer Application of Shrimp Pond Waste Sediment For Growth And Productivity (Lactuca Sativa Crispa L )”. Jurnal Penelitian Pertanian Terapan, vol. 20, no. 2, Oct. 2020, pp. 170-6, doi:10.25181/jppt.v20i2.1677.