(1986). Prevention and control of yellow fever in Africa. belgium.
Chicagoスタイル(17版)引用形式Prevention and Control of Yellow Fever in Africa. Ginebra: belgium, 1986.
MLA(9版)引用形式Prevention and Control of Yellow Fever in Africa. belgium, 1986.
警告: この引用は必ずしも正確ではありません.