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Cita Chicago (17th ed.)Philippines National Economic and Development Authority, Transportation and Communications Philippines. Department of Public Works, Tahal Consulting Engineers, United Nations Development Programme, University of the Philippines (Diliman) Institute of Planning, i Planning and Project Development Office. Pampanga Delta / Candaba Swamp Area Development Project: Interim Report II. [Quezon City]: DPWTC, 1976.
Cita MLA (9th ed.)Philippines National Economic and Development Authority, et al. Pampanga Delta / Candaba Swamp Area Development Project: Interim Report II. DPWTC, 1976.