Haghighatnia, Hasan, et al. “Enhancing Peppermint Growth: Investigating the Interplay of Biochar and Nitrogen Levels”. SAINS TANAH - Journal of Soil Science and Agroclimatology, vol. 21, no. 2, Nov. 2024, pp. 145-5, https://doi.org/10.20961/stjssa.v21i2.89008.