Lwanga, S. K., & Lemeshow, S. (1991). Sample size determination in health studies: A practical manual. World Health Organization.
Citazione stile Chigago Style (17a edizione)Lwanga, S. Kaggwa, e Stanley Lemeshow. Sample Size Determination in Health Studies: A Practical Manual. Geneva: World Health Organization, 1991.
Citatione MLA (9a ed.)Lwanga, S. Kaggwa, e Stanley Lemeshow. Sample Size Determination in Health Studies: A Practical Manual. World Health Organization, 1991.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.