Borja, D. V. H. (2011). Water projects and discount rates. College of Business Administration, University of the Philippines.
Chicago-referens (17:e uppl.)Borja, Daniel Vincent H. Water Projects and Discount Rates. Quezon City: College of Business Administration, University of the Philippines, 2011.
MLA-referens (9:e uppl.)Borja, Daniel Vincent H. Water Projects and Discount Rates. College of Business Administration, University of the Philippines, 2011.
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