Dyfyniad APA

World Health Organization. (2008). International health regulations (2005) (Second edition.). World Health Organization.

Dyfyniad Arddull Chicago

World Health Organization. International Health Regulations (2005). Second edition. Geneva: World Health Organization, 2008.

Dyfyniad MLA

World Health Organization. International Health Regulations (2005). Second edition. World Health Organization, 2008.

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