Ulfa, Mariah, et al. “The Role of Sibolangit Nature Tourism Park in Climate Change Mitigation: Aboveground Biomass, Carbon Stock, and CO2 Equivalent”. Jurnal Sylva Lestari, vol. 14, no. 2, Apr. 2026, pp. 211-25, doi:10.23960/jsl.v14i2.1391.