Attributes / relations provided by
♦ ¹"Habitat Use and Trophic Niche Overlap of Two Sympatric Colobines, Presbytis potenziani and Simias concolor, on Siberut Island, Indonesia", Susilo Hadi, Thomas Ziegler, Matthias Waltert, Fauzan Syamsuri, Michael Mühlenberg, J. Keith Hodges, Int. J. Primatol. (2012) 33:218–232
♦ 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
♦ ³Feeding and Ranging in the Mentawai Island Langur (Presbytis potenziani), Agustin Fuentes, International Journal of Primatology, Vol 17, No. 4, 1996
♦ ⁴"Fig-eating by vertebrate frugivores: a global review", MIKE SHANAHAN, SAMSON SO, STEPHEN G. COMPTON and RICHARD CORLETT, Biol. Rev. (2001), 76, pp. 529–572