Concepcion, M., & Flieger, W. (1980). Measurement of outreach effects and sampling scheme. Philippine Center for Economic Development.
Chicago Style (17. basım) AtıfConcepcion, Mercedes, ve Wilhelm Flieger. Measurement of Outreach Effects and Sampling Scheme. Quezon City: Philippine Center for Economic Development, 1980.
MLA (9th ed.) AtıfConcepcion, Mercedes, ve Wilhelm Flieger. Measurement of Outreach Effects and Sampling Scheme. Philippine Center for Economic Development, 1980.
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