Cita APA

Smith, J., Leke, R., Adams, A., & Tangermann, R. H. (2004). Certification of polio eradication: Process and lessons learned. World Health Organization.

Chicago Style Citation

Smith, Joseph, Rose Leke, Anthony Adams, i Rudolf H. Tangermann. Certification of Polio Eradication: Process and Lessons Learned. World Health Organization, 2004.

Cita MLA

Smith, Joseph, Rose Leke, Anthony Adams, i Rudolf H. Tangermann. Certification of Polio Eradication: Process and Lessons Learned. World Health Organization, 2004.