SiregarJ. P., MardiastutiA., and SiregarR. S. E. “Activity Budget of Ex-Captive Sumatran Orangutan Post Release in Sumatran Orangutan Reintroduction Centre in Jambi”. Media Konservasi, Vol. 23, no. 1, July 2018, pp. 99-106, doi:10.29244/medkon.23.1.99-106.