Mittermeier, R.A.; Wallis, J.; Rylands, A.B.; Ganzhorn, J.U.; Oates, J.F.; Williamson, E.A.; Palacios, E.; Heymann, E.W.; Kierulff, M.C.M.; Long Yongcheng; Supriatna, J.; Roos, C.; Walker, S.; Cortés-Ortiz, L.; Schwitzer, C., ed. (2009). "Primates in Peril: The World's 25 Most Endangered Primates 2008–2010"(PDF). Illustrated by S.D. Nash. IUCN/SSC Primate Specialist Group (PSG), International Primatological Society (IPS), and Conservation International (CI): 1–92. ISBN978-1-934151-34-1. Diarsipkan dari versi asli(PDF) tanggal 2011-07-23. Diakses tanggal 2016-01-02.
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Mittermeier, R.A.; Wallis, J.; Rylands, A.B.; Ganzhorn, J.U.; Oates, J.F.; Williamson, E.A.; Palacios, E.; Heymann, E.W.; Kierulff, M.C.M.; Long Yongcheng; Supriatna, J.; Roos, C.; Walker, S.; Cortés-Ortiz, L.; Schwitzer, C., ed. (2009). "Primates in Peril: The World's 25 Most Endangered Primates 2008–2010"(PDF). Illustrated by S.D. Nash. IUCN/SSC Primate Specialist Group (PSG), International Primatological Society (IPS), and Conservation International (CI): 1–92. ISBN978-1-934151-34-1. Diarsipkan dari versi asli(PDF) tanggal 2011-07-23. Diakses tanggal 2016-01-02.