Yan, G., & Manul, J. (2014). Tamaraw population soars to 302, highest on record. AmCham Philippines Business Journal.
Lua i Stíl Chicago (17ú heag.)Yan, Gregg, agus John Manul. "Tamaraw Population Soars to 302, Highest on Record." AmCham Philippines Business Journal 2014.
Lua MLA (9ú heag.)Yan, Gregg, agus John Manul. "Tamaraw Population Soars to 302, Highest on Record." AmCham Philippines Business Journal, 2014.
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