Health Research Methodology: A guide for training in Research Methods (2nd ed.). WHO.
Cita Chicago Style (17a ed.)Health Research Methodology: A Guide for Training in Research Methods. 2nd ed. Manila: WHO.
Cita MLA (8a ed.)Health Research Methodology: A Guide for Training in Research Methods. 2nd ed. WHO.
Precaución: Estas citas no son 100% exactas.