Herrin, A. N. (1987). Evaluating development projects: Principles & applications. Population/Development Planning and Research Project, National Economic and Development Authority.
Chicago-referens (17:e uppl.)Herrin, Alejandro N. Evaluating Development Projects: Principles & Applications. Metro Manila: Population/Development Planning and Research Project, National Economic and Development Authority, 1987.
MLA-referens (9:e uppl.)Herrin, Alejandro N. Evaluating Development Projects: Principles & Applications. Population/Development Planning and Research Project, National Economic and Development Authority, 1987.
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