Yaowalak Chaimanee u. a.: A Middle Miocene hominoid from Thailand and orangutan origins. In: Nature. Band 422, 2003, S. 61–65, doi:10.1038/nature01449.
Martin Pickford et al.: Age and taxonomic status of the Chiang Muan (Thailand) hominoids. In: Comptes Rendus Palevol. Band 3, Nr. 1, 2004, S. 65–75, doi:10.1016/j.crpv.2003.09.029.
