Guerrero, S. H. (1980). Impact assessment of the PUSH Project: Some notes on data collection. Philippine Center for Economic Development.
Chicago-referens (17:e uppl.)Guerrero, Sylvia H. Impact Assessment of the PUSH Project: Some Notes on Data Collection. Quezon City: Philippine Center for Economic Development, 1980.
MLA-referens (9:e uppl.)Guerrero, Sylvia H. Impact Assessment of the PUSH Project: Some Notes on Data Collection. Philippine Center for Economic Development, 1980.
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