OMS. Basis epidemiology. Geneva: OMS.
Chicago Style aipamenaOMS. Basis Epidemiology. Geneva: OMS.
MLA aipamenaOMS. Basis Epidemiology. Geneva: OMS.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.
OMS. Basis epidemiology. Geneva: OMS.
Chicago Style aipamenaOMS. Basis Epidemiology. Geneva: OMS.
MLA aipamenaOMS. Basis Epidemiology. Geneva: OMS.