1. Bureau of Soils and Water Management (BSWM) (2012) Assessment of Non-Point Source Pollution from Croplands of Manila Bay System. Bureau of Soils and Water Management—Department of Agriculture, Quezon City, Philippines, 135 p.
2. Department of Environment and National Resources—Manila Bay Coordinating Office (DENR-MBCO) & National Mapping and Resource Information Authority (NAMRIA) (2015) Manila Bay Area Environmental Atlas. 2nd Edition, Manila Bay Coordinating Office and the National Mapping and Resource Information Authority, Quezon City, Philippines, 250 p.
3. National Economic and Development Authority (NEDA) (2022) Manila Bay Sustainable Development Master Plan: Action Plan and Investment Report. http://mbsdmp.com/download/apir-feb-2022_cddf2d7c909bbe451fd24a3b98293008.pdf
4. Department of Environment and National Resources—River Basin Control Office (DENR-RBCO) (n.d.) Pampanga River Basin. https://riverbasin.denr.gov.ph/river/pampanga
5. BSWM (2013) Application of Stable Isotopes to the Assessment of Pollution Loading from Various Sources in the Pampanga River System into the Manila Bay, Philippines. Bureau of Soils and Water Management—Department of Agriculture, Quezon City, Philippines, 164 p.