Dyfyniad APA

World health Organization. (2001). Health research methodology: A guide for training in research methodology (2nd- ed.). World Health organization.

Dyfyniad Arddull Chicago

World health Organization. Health Research Methodology: A Guide for Training in Research Methodology. 2nd- ed. Manila: World Health organization, 2001.

Dyfyniad MLA

World health Organization. Health Research Methodology: A Guide for Training in Research Methodology. 2nd- ed. World Health organization, 2001.

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