APA (7th ed.) Citation

Leigh F Johnson & Andrew Boulle. (2011). How should access to antiretroviral treatment be measured? The World Health Organization.

Chicago Style (17th ed.) Citation

Leigh F Johnson and Andrew Boulle. How Should Access to Antiretroviral Treatment Be Measured? The World Health Organization, 2011.

MLA (9th ed.) Citation

Leigh F Johnson and Andrew Boulle. How Should Access to Antiretroviral Treatment Be Measured? The World Health Organization, 2011.

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