APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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