Willets, G. (1899). Rulers of the world at home: How they look and how they live. Christian Herald.
Chicagoスタイル(17版)引用形式Willets, Gilson. Rulers of the World at Home: How They Look and How They Live. New York: Christian Herald, 1899.
MLA(9版)引用形式Willets, Gilson. Rulers of the World at Home: How They Look and How They Live. Christian Herald, 1899.
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