APA aipamena

(2002). Vacines and Biologicals Who vaccine preventable diasease monitoring system 2002 global summary.

Chicago Style aipamena

Vacines and Biologicals Who Vaccine Preventable Diasease Monitoring System 2002 Global Summary. 2002.

MLA aipamena

Vacines and Biologicals Who Vaccine Preventable Diasease Monitoring System 2002 Global Summary. 2002.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.