Utami, K. et al. 2020. The kinetics curve of nitrogen mineralization from perennial leaves litter decomposed by earthworm (Phretima californica). SAINS TANAH - Journal of Soil Science and Agroclimatology. 17, 2 (Dec. 2020), 152–160. DOI:https://doi.org/10.20961/stjssa.v17i2.46928.