Bakrie, Muchlis Muhammad, et al. “APLIKASI PUPUK ANORGANIK DAN ORGANIK HAYATI PADA BUDIDAYA PADI SRI (System of Rice Intensification)”. Jurnal Ilmu Tanah Dan Lingkungan, vol. 12, no. 2, Oct. 2010, pp. 25-32, https://doi.org/10.29244/jitl.12.2.25-32.