Images of Hylobates lar from Thailand.
References:
Brockelman, W. & Geissmann, T. 2008. Hylobates lar. The IUCN Red List of Threatened Species 2008: e.T10548A3199623. http://dx.doi.org/10.2305/IUCN.UK.2008.RLTS.T10548A3199623.en. Downloaded on 28 March 2019.
Brockelman, W. & Geissmann, T. 2008. Hylobates lar. The IUCN Red List of Threatened Species 2008: e.T10548A3199623. http://dx.doi.org/10.2305/IUCN.UK.2008.RLTS.T10548A3199623.en. Downloaded on 28 March 2019.