Claudia, Ellen, et al. “Potential of Organic Liquid Fertilizer from Rice Washing Water and Goat Urine on The Growth of Pak Choi (Brassica Rapa L. Var. Chinensis) Using Hydroponic Method”. Jurnal Biologi Tropis, vol. 25, no. 1, Mar. 2025, pp. 1113-8, doi:10.29303/jbt.v25i1.8791.