Fenner, F. (1988). Smallpox and its eradication. World Health Organisation.
シカゴスタイル引用形Fenner, F. Smallpox and Its Eradication. Geneva: World Health Organisation, 1988.
MLA引用形式Fenner, F. Smallpox and Its Eradication. World Health Organisation, 1988.
警告: この引用は必ずしも正確ではありません.