Cita APA (7a ed.)

World Health Organization. (2011). Atlas of headache disorders and resources in the world 2011. World Health Organization.

Cita Chicago Style (17a ed.)

World Health Organization. Atlas of Headache Disorders and Resources in the World 2011. Geneva, Switzerland: World Health Organization, 2011.

Cita MLA (8a ed.)

World Health Organization. Atlas of Headache Disorders and Resources in the World 2011. World Health Organization, 2011.