APA (7th ed.) Citation

World Health Organization & World Health Organization. Ports designated in application of the international health regulations. World Health Organization.

Chicago Style (17th ed.) Citation

World Health Organization and World Health Organization. Ports Designated in Application of the International Health Regulations. Genève: World Health Organization.

MLA (8th ed.) Citation

World Health Organization and World Health Organization. Ports Designated in Application of the International Health Regulations. World Health Organization.