Warren, C. P. (1985). Black Asians in the Philippines the "Negrito problem" revisited. Pilipinas : a journal of Philippine studies.
Chicago-referens (17:e uppl.)Warren, Charles P. "Black Asians in the Philippines the "Negrito Problem" Revisited." Pilipinas : A Journal of Philippine Studies 1985.
MLA-referens (9:e uppl.)Warren, Charles P. "Black Asians in the Philippines the "Negrito Problem" Revisited." Pilipinas : A Journal of Philippine Studies, 1985.
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