Cita APA (7a ed.)

Bulletin of the World Health Organization [Bull World Health Organ] NLMUID: 7507052.

Cita Chicago Style (17a ed.)

Bulletin of the World Health Organization [Bull World Health Organ] NLMUID: 7507052.

Cita MLA (8a ed.)

Bulletin of the World Health Organization [Bull World Health Organ] NLMUID: 7507052.

Precaución: Estas citas no son 100% exactas.