APA (7th ed.) Citation

Sheena Sullivan. (2013). Opioid substitution: Improving cost-efficiency. The World Health Organization.

Chicago Style (17th ed.) Citation

Sheena Sullivan. Opioid Substitution: Improving Cost-efficiency. The World Health Organization, 2013.

MLA (9th ed.) Citation

Sheena Sullivan. Opioid Substitution: Improving Cost-efficiency. The World Health Organization, 2013.

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