Porter, G., & Ganapin, D. J. (1988). Resources, population, and the Philippines' future: A case study. World Resources Institute.
Lua i Stíl Chicago (17ú heag.)Porter, Gareth, agus Delfin J. Ganapin. Resources, Population, and the Philippines' Future: A Case Study. Washington, D.C: World Resources Institute, 1988.
Lua MLA (9ú heag.)Porter, Gareth, agus Delfin J. Ganapin. Resources, Population, and the Philippines' Future: A Case Study. World Resources Institute, 1988.
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