Piper, P. J.; Ochoa, J.; Lewis, H.; Paz, V.; Ronquillo, W. P. (2008). "The first evidence for the past presence of the tiger Panthera tigris (L.) on the island of Palawan, Philippines: extinction in an island population". Palaeogeography, Palaeoclimatology, Palaeoecology264 (1–2): 123–127. doi:10.1016/j.palaeo.2008.04.003. Bibcode: 2008PPP...264..123P.
Piper, P. J.; Ochoa, J.; Lewis, H.; Paz, V.; Ronquillo, W. P. (2008). "The first evidence for the past presence of the tiger Panthera tigris (L.) on the island of Palawan, Philippines: extinction in an island population". Palaeogeography, Palaeoclimatology, Palaeoecology264 (1–2): 123–127. doi:10.1016/j.palaeo.2008.04.003. Bibcode: 2008PPP...264..123P.
"Islands of Philippines". Island Directory. United Nations Environment Programme. Archived from the original on 28 ஏப்ரல் 2019. Retrieved 28 February 2017. {{cite web}}: Check date values in: |archive-date= (help)
web.archive.org
"Islands of Philippines". Island Directory. United Nations Environment Programme. Archived from the original on 28 ஏப்ரல் 2019. Retrieved 28 February 2017. {{cite web}}: Check date values in: |archive-date= (help)
