Cita APA

Pan American Health Organization. Immunization Unit. Immunization newsletter. Washington, D.C.: Pan American Health Organization, Regional Office of the World Health Organization, Immunization Unit.

Citación estilo Chicago

Pan American Health Organization. Immunization Unit. Immunization Newsletter. Washington, D.C.: Pan American Health Organization, Regional Office of the World Health Organization, Immunization Unit.

Cita MLA

Pan American Health Organization. Immunization Unit. Immunization Newsletter. Washington, D.C.: Pan American Health Organization, Regional Office of the World Health Organization, Immunization Unit.