APA citiranje

de Guerra Macedo, C., & Melgaard, B. (2000). The legacies of polio eradication. World Health Organization.

Citação norma Chicago

de Guerra Macedo, C., and B. Melgaard. The Legacies of Polio Eradication. World Health Organization, 2000.

MLA citiranje

de Guerra Macedo, C., and B. Melgaard. The Legacies of Polio Eradication. World Health Organization, 2000.

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