SiagianT. B., MawadaD. Q., and FitriA. “Observation of Infant Body Weight and Physiological Conditions of Siamang (Symphalangus Syndactylus) in Ex Situ Conservation”. ARSHI Veterinary Letters, Vol. 7, no. 4, Dec. 2023, pp. 75-76, doi:10.29244/avl.7.4.75-76.