Lidar, Seprita, and Hadi Suwarno. “UJI BEBERAPA JENIS PUPUK ORGANIK TERHADAP TANAMAN CAISIM(Brassica Campestris L)”. Jurnal Ilmiah Pertanian, vol. 11, no. 2, Feb. 2015, pp. 37-45, https://doi.org/10.31849/jip.v11i2.1267.