Attributes / relations provided by
♦ ¹Feeding Ecology of the Proboscis Monkey (Nasalis larvatus), Carey P. Yeager, International Journal of Primatology, Vol. 10, No. 6, 1989, pp. 497-530
♦ ²The Diversity of Plants as Feed Resources for the Java Gibbon (Hylobates moloch), Grizzled Langur (Presbytis cornata), and Silver Langur (Trachypithecus auratus) In Gunung Halimun National Park, Wartika Rosa Farida and Harun, Jurnal Primatologi Indonesia, Vol. 3, No. 2, Desember 2000, p.:55-61