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jstor.org
Fix, Alan G. (June 1995). "Malayan Paleosociology: Implications for Patterns of Genetic Variation among the Orang Asli". American Anthropologist. New Series. 97 (2): 313–323. doi:10.1525/aa.1995.97.2.02a00090. JSTOR681964.
"Niah Cave". humanorigins.si.edu (dalam bahasa Inggeris). Smithsonian National Museum of Natural History. Diarkibkan daripada yang asal pada 22 November 2013. Dicapai pada 23 Mac 2015.
"Niah Cave". humanorigins.si.edu (dalam bahasa Inggeris). Smithsonian National Museum of Natural History. Diarkibkan daripada yang asal pada 22 November 2013. Dicapai pada 23 Mac 2015.