World Health Organization. (2011). Atlas of headache disorders and resources in the world 2011. World Health Organization.
Chicagoスタイル(17版)引用形式World Health Organization. Atlas of Headache Disorders and Resources in the World 2011. Geneva, Switzerland: World Health Organization, 2011.
MLA(8版)引用形式World Health Organization. Atlas of Headache Disorders and Resources in the World 2011. World Health Organization, 2011.
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