Order Primates Author Wilson, Don E. Author Reeder, DeeAnn text 2005 The Johns Hopkins University Press Baltimore Mammal Species of the World: a Taxonomic and Geographic Reference (3 rd Edition), Volume 1 111 184 book chapter 0-8018-8221-4 10.5281/zenodo.7316519 Presbytis siamensis subsp. siamensis Müller and Schlegel 1841 Presbytis siamensis subsp. siamensis Müller and Schlegel 1841 , in: Temminck, Verh. Nat. Ges. Overz. Bezitt. Zool. (Mamm.): 60 . Type Locality: Malaya, Melaka . Synonyms: Presbytis siamensis subsp. dilecta Elliot 1909 ; Presbytis siamensis subsp. nigrimanus (I. Geoffroy 1843) ; Presbytis siamensis subsp. nubigena Elliot 1909 .