Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (8a ed.)

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