World Health Organization. (2011). Atlas of headache disorders and resources in the world 2011. World Health Organization.
Style de citation Chicago (17e éd.)World Health Organization. Atlas of Headache Disorders and Resources in the World 2011. Geneva, Switzerland: World Health Organization, 2011.
Style de citation MLA (8e éd.)World Health Organization. Atlas of Headache Disorders and Resources in the World 2011. World Health Organization, 2011.
Attention : ces citations peuvent ne pas être correctes à 100%.