APA (7e ed.) Bronvermelding

Lwanga, S. K., & Lemeshow, S. (1991). Sample size determination in health studies: A practical manual. World Health Organization.

Chicago (17e ed.) Bronvermelding

Lwanga, S. Kaggwa, en Stanley Lemeshow. Sample Size Determination in Health Studies: A Practical Manual. Geneva: World Health Organization, 1991.

MLA (9e ed.) Bronvermelding

Lwanga, S. Kaggwa, en Stanley Lemeshow. Sample Size Determination in Health Studies: A Practical Manual. World Health Organization, 1991.