World Health Organization. (2000). International travel and health: Vaccination requirements and health advice. World Health Organization.
Chicagoスタイル(17版)引用形式World Health Organization. International Travel and Health: Vaccination Requirements and Health Advice. Geneva: World Health Organization, 2000.
MLA(8版)引用形式World Health Organization. International Travel and Health: Vaccination Requirements and Health Advice. World Health Organization, 2000.
警告: この引用は必ずしも正確ではありません.