Robles, E. C. (2013). Estimates of quaternary Philippine coastlines, land bridges, submerged river systems and migration routes: A GRASS GIS approach. Hukay.
Čikaški stil citiranja (17. izdanje)Robles, Emil Charles. "Estimates of Quaternary Philippine Coastlines, Land Bridges, Submerged River Systems and Migration Routes: A GRASS GIS Approach." Hukay 2013.
MLA način citiranja (9. izdanje)Robles, Emil Charles. "Estimates of Quaternary Philippine Coastlines, Land Bridges, Submerged River Systems and Migration Routes: A GRASS GIS Approach." Hukay, 2013.
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