Raksun, Ahmad, et al. “The Growth Response of Kale Land (Ipomoea Reptans Poir) to the Aplications of Vermicompost and NPK Fertilizer ”. Jurnal Biologi Tropis, vol. 22, no. 2, May 2022, pp. 504-10, doi:10.29303/jbt.v22i2.3447.