World Health Organization, Centers for Disease Control and Prevention, & International Clearinghouse for Birth Defects Surveillance and Research. (2014). Birth defects surveillance a manual for programme managers. World Health Organization.
Παραπομπή σε μορφή Chicago (17η εκδ.)World Health Organization, Centers for Disease Control and Prevention, και International Clearinghouse for Birth Defects Surveillance and Research. Birth Defects Surveillance a Manual for Programme Managers. Geneva, switzerland: World Health Organization, 2014.
Παραπομπή σε μορφή MLA (8th εκδ.)World Health Organization, et al. Birth Defects Surveillance a Manual for Programme Managers. World Health Organization, 2014.
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