Concepcion, M., & Flieger, W. (1980). Measurement of outreach effects and sampling scheme. Philippine Center for Economic Development.
Citazione stile Chigago Style (17a edizione)Concepcion, Mercedes, e Wilhelm Flieger. Measurement of Outreach Effects and Sampling Scheme. Quezon City: Philippine Center for Economic Development, 1980.
Citatione MLA (9a ed.)Concepcion, Mercedes, e Wilhelm Flieger. Measurement of Outreach Effects and Sampling Scheme. Philippine Center for Economic Development, 1980.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.