Samsul, N. Santoso, and B. Mas’yud, “Sentarum langurs (Presbytis chrysomelas) demographic parameters in Sepandan Resort Area of Sentarum Lake National Park”, JPSL, vol. 13, no. 3, pp. 454–461, Sep. 2023, doi: 10.29244/jpsl.13.3.454-461.