(1997). Sustainable livelihood options for the Philippines: An information kit. Urban-lowland ecosystem. Department of Environment and Natural Resources.
Chicago Style (17. basım) AtıfSustainable Livelihood Options for the Philippines: An Information Kit. Urban-lowland Ecosystem. Diliman, Q.C: Department of Environment and Natural Resources, 1997.
MLA (9th ed.) AtıfSustainable Livelihood Options for the Philippines: An Information Kit. Urban-lowland Ecosystem. Department of Environment and Natural Resources, 1997.
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