APA (7th ed.) Citation

Wored Health Organization. (1998). The Use of Essential Drugs. WHO.

Chicago Style (17th ed.) Citation

Wored Health Organization. The Use of Essential Drugs. Geneve: WHO, 1998.

MLA (9th ed.) Citation

Wored Health Organization. The Use of Essential Drugs. WHO, 1998.

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