Twain, M. (2001). Roughing it. Digital Scanning.
Chicagoスタイル(17版)引用形式Twain, Mark. Roughing It. Scituate, Mass.: Digital Scanning, 2001.
MLA(9版)引用形式Twain, Mark. Roughing It. Digital Scanning, 2001.
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APA(7版)引用形式