Sumalde, Z. M. (2004). Implementation and financing of solid waste management in the Philippines. Economy and Environment Program for Southeast Asia.
Lua i Stíl Chicago (17ú heag.)Sumalde, Zenaida M. Implementation and Financing of Solid Waste Management in the Philippines. Singapore: Economy and Environment Program for Southeast Asia, 2004.
Lua MLA (9ú heag.)Sumalde, Zenaida M. Implementation and Financing of Solid Waste Management in the Philippines. Economy and Environment Program for Southeast Asia, 2004.
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