APA (7th ed.) Citation

Hamel Nadia. (2003). In focus: Health - an ecosystem. The World Health Organization.

Chicago Style (17th ed.) Citation

Hamel Nadia. In Focus: Health - an Ecosystem. The World Health Organization, 2003.

MLA (9th ed.) Citation

Hamel Nadia. In Focus: Health - an Ecosystem. The World Health Organization, 2003.

Warning: These citations may not always be 100% accurate.