APA引文

Twain, M. (2001). Roughing it. Digital Scanning.

芝加哥风格引文

Twain, Mark. Roughing It. Scituate, Mass.: Digital Scanning, 2001.

MLA引文

Twain, Mark. Roughing It. Digital Scanning, 2001.

警告：这些引文格式不一定是100％准确.