Various. Encyclopaedia Britannica, 11th Edition, "Luray Cavern" to "Mackinac Island" Volume 17, Slice 2.
Chicagoスタイル(17版)引用形式Various. Encyclopaedia Britannica, 11th Edition, "Luray Cavern" to "Mackinac Island" Volume 17, Slice 2.
MLA(9版)引用形式Various. Encyclopaedia Britannica, 11th Edition, "Luray Cavern" to "Mackinac Island" Volume 17, Slice 2.
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