APA
World Health Organization, . (1981). Health programme evaluation: guiding principles for it applications in the managerial process for National Health Development (Health for all series no - 6). Geneva: World Health Oraganization.
Chicago
World Health Organization, . 1981. Health programme evaluation: guiding principles for it applications in the managerial process for National Health Development (Health for all series no - 6). Geneva: World Health Oraganization.
Harvard
World Health Organization, . (1981). Health programme evaluation: guiding principles for it applications in the managerial process for National Health Development (Health for all series no - 6). Geneva: World Health Oraganization.
MLA
World Health Organization, . Health programme evaluation: guiding principles for it applications in the managerial process for National Health Development (Health for all series no - 6). Geneva: World Health Oraganization. 1981.