Dyfyniad APA

Lwanga S.K & Lemeshow S. (1991). Sample Size determination in health studies: A practical manual. WHO.

Dyfyniad Arddull Chicago

Lwanga S.K and Lemeshow S. Sample Size Determination in Health Studies: A Practical Manual. England: WHO, 1991.

Dyfyniad MLA

Lwanga S.K and Lemeshow S. Sample Size Determination in Health Studies: A Practical Manual. WHO, 1991.

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