Aditya, Wahyu, et al. “Diversity of Butterfly Types (Lepidoptera: Rhopalocera) Based on Altitude Variations in Sibayak II Forest, North Sumatra”. Jurnal Biologi Tropis, vol. 24, no. 1, Jan. 2024, pp. 8-15, doi:10.29303/jbt.v24i1.6330.